289 relations: Acanthomorpha, Acanthopterygii, Acanthuridae, Acipenser oxyrinchus, Acipenseriformes, Actinistia, Actinopteri, Aldrovandia, Alepocephalidae, Alfonsino, Amblyopsidae, Amiiformes, Amniote, Amphibian, Ampullae of Lorenzini, Anabantiformes, Anchovy, Andreolepis hedei, Anglerfish, Apogonidae, Argentiniformes, Asian arowana, Aspidorhynchiformes, Atheriniformes, Atlantic salmon, Atlantic sturgeon, Atlantic tarpon, Atlantic tripletail, Aulopiformes, Bandfish, Barb (fish), Barreleye, Batrachoididae, Beardfish, Beloniformes, Beryciformes, Bichir, Big-scale sand smelt, Billfish, Bird, Blennioidei, Bombay duck, Bonefish, Bonefishes, Bowfin, Butterflyfish, Caproidae, Carp, Cartilage, Catfish, ..., Cenozoic, Centrarchidae, Cetomimiformes, Characiformes, Chondrostei, Cichlid, Cladistia, Cladogram, Class (biology), Clupeiformes, Cod, Cornetfish, Crossognathiformes, Ctenothrissiformes, Cutlassfish, Cypriniformes, Cyprinodontiformes, Danio, Diplecogaster bimaculata, Dorsal fin, Dory (fish), Drepane (fish), Eel, Electric eel, Electroreception, Elopidae, Elopiformes, Elopomorpha, Emperor angelfish, Ephippidae, Esociformes, Esox, Estonia, European conger, European eel, Euteleostei, Exaptation, External fertilization, Fangtooth, Filefish, Fire eel, Fish, Fish fin, FishBase, Flatfish, Flathead grey mullet, Florida gar, Flying fish, Flying gurnard, Fresh water, Freshwater hatchetfish, Gadiformes, Galaxiidae, Gar, Gasterosteiformes, Giant oarfish, Gobiesocidae, Gobiesociformes, Gobiiformes, Goby, Goldeye, Goldfish, Gonorynchiformes, Gonostoma, Gonostomatidae, Gourami, Guildayichthyiformes, Gulf toadfish, Gymnotiformes, Haemulidae, Hagfish, Halosaur, Herring, Hiodontiformes, Holocentridae, Holostei, Houndfish, Hydrocynus vittatus, Hypomesus nipponensis, Integrated Taxonomic Information System, Internal fertilization, Istiophoriformes, Jellynose fish, John Dory, Killifish, Knifefish, Lampriformes, Lancetfish, Lanternfish, Leafy seadragon, Leiognathidae, Lepidogalaxias, Live-bearing aquarium fish, Louvar, Lungfish, Lutjanidae, Mackerel, Mammal, Mangrove rivulus, Marine hatchetfish, Marlin, Mesozoic, Milkfish, Minnow, Mirror dory, Mojarra, Monocentridae, Mooneye, Moorish idol, Mullet (fish), Myctophiformes, Myctophum punctatum, Myripristinae, Neopterygii, Neoteleostei, Northern pike, Notacanthiformes, Nothobranchius rachovii, Nurseryfish, Oarfish, Ocean, Ocean sunfish, Ontogeny, Opah, Ophidiiformes, Osmeriformes, Ossification, Ostariophysi, Osteichthyes, Osteoglossiformes, Osteoglossomorpha, Otocephala, Oviparity, Ovoviviparity, Pachycormiformes, Paddlefish, Paedocypris, Palaeonisciformes, Paracanthopterygii, Paraphyly, Parrotfish, Pearlfish, Pegasidae, Pelican eel, Peltopleuriformes, Pelvic fin, Pencil fish, Perciformes, Percomorpha, Percopsiformes, Percopsis omiscomaycus, Perleidiformes, Permian, Pholidichthys leucotaenia, Pholidopleuriformes, Piaractus mesopotamicus, Pipefish, Piranha, Pirate perch, Plate fish, Polypterus weeksii, Pompano, Priacanthidae, Protacanthopterygii, Prussian carp, Ptycholepiformes, Pycnodontiformes, Rainbow trout, Rainbowfish, Rasbora, Red lionfish, Red-bellied piranha, Reedfish, Reptile, Ribbonfish, Ricefish, Russia, Saccopharyngiformes, Salminus brasiliensis, Salmon, Salmonidae, Sandperch, Sarcopterygii, Sargocentron spiniferum, Saurichthyiformes, Sauropsida, Scale (anatomy), Scatophagidae, Scombriformes, Scorpaeniformes, Sea bass, Seahorse, Semionotiformes, Sequential hermaphroditism, Shark, Silurian, Sladenia shaefersi, Smelt (fish), Snakehead (fish), Sparidae, Spectrunculus grandis, Spiny eel, Spiracle, Stargazer (fish), Stephanoberyciformes, Stiassnyiformes, Stomiiformes, Sturgeon, Swamp eel, Sweden, Sweeper, Swordfish, Synbranchiformes, Syngnathiformes, Tarpon, Tarrasiiformes, Teleost, Terapontidae, Tetra, Tetraodontidae, Tetraodontiformes, Tetrapod, Three-spined stickleback, Trachurus, Trisopterus luscus, Trout, Tube-eye, Tuna, Twait shad, Variegated lizardfish, Velvet whalefish, Vertebra, Vertebrate, Viperfish, Viviparity, Wels catfish, Wrasse, Yellowmargin triggerfish, Zeiformes. Expand index (239 more) » « Shrink index
Acanthomorpha (meaning "thorn-shaped" in Greek) is an extraordinarily diverse taxon of teleost fishes with spiny-rays.
Acanthopterygii (meaning "spiny finned one") is a superorder of bony fishes in the class Actinopterygii.
Acanthuridae is the family of surgeonfishes, tangs, and unicornfishes.
Acipenser oxyrinchus is a species of sturgeon.
''Yanosteus longidorsalis'' MHNT Acipenseriformes is an order of basal ray-finned fishes that includes the sturgeons and paddlefishes, as well as some extinct families.
Actinistia is a subclass of mostly fossil lobe-finned fishes.
Actinopteri is the sister group of Cladistia.
Aldrovandia is a genus of fish in the family Halosauridae.
Slickheads or nakedheads are a family, Alepocephalidae, of marine smelts.
The alfonsino (Beryx decadactylus), also known as the alfonsin, longfinned beryx, red bream, or imperador, is a species of deepwater berycid fish of the order Beryciformes.
The Amblyopsidae are a fish family commonly referred to as cavefish, blindfish, or swampfish.
The Amiiformes order of fish has only one extant species, the bowfin (Amia calva).
Amniotes (from Greek ἀμνίον amnion, "membrane surrounding the fetus", earlier "bowl in which the blood of sacrificed animals was caught", from ἀμνός amnos, "lamb") are a clade of tetrapod vertebrates comprising the reptiles, birds, and mammals.
Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia.
The ampullae of Lorenzini are special sensing organs called electroreceptors, forming a network of jelly-filled pores.
The Anabantiformes are an order of freshwater ray-finned fish with seven families (Pristolepididae, Badidae, Nandidae, Channidae, Anabantidae, Helostomatidae, and Osphronemidae) and having at least 252 species.
An anchovy is a small, common forage fish of the family Engraulidae.
Andreolepis hedei is an extinct prehistoric fish, living around 420 million years ago.
Anglerfish are fish of the teleost order Lophiiformes.
Cardinalfishes are a family, Apogonidae, of ray-finned fishes found in the Atlantic, Indian, and Pacific Oceans; they are chiefly marine, but some species are found in brackish water and a few (notably Glossamia) are found in fresh water.
The Argentiniformes are an order of ray-finned fish whose distinctness was recognized only fairly recently.
The Asian arowana (Scleropages formosus) comprises several phenotypic varieties of freshwater fish distributed geographically across Southeast Asia.
Aspidorhynchiformes (meaning "shield snout form") is an extinct order of prehistoric ray-finned fish that was described by Bleeker in 1859.
The Atheriniformes, also known as the silversides, are an order of ray-finned fishes that includes the Old World silversides and several less-familiar families, including the unusual Phallostethidae.
The Atlantic salmon (Salmo salar) is a species of ray-finned fish in the family Salmonidae.
The Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) is a North American member of the Acipenseridae family and is among the oldest fish species in the world.
The Atlantic tarpon (Megalops atlanticus) inhabits coastal waters, estuaries, lagoons, and rivers.
The Atlantic tripletail or tripletail (Lobotes surinamensis) is a warm-water marine fish found across the tropics; it can grow to 90 cm long and weigh 18 kg.
Aulopiformes is a diverse order of marine ray-finned fish consisting of some 15 extant and several prehistoric families with about 45 genera and over 230 species.
Bandfishes are a family, Cepolidae, of perciform marine fishes.
A barb is one of various ray-finned fish species in a non-phylogenetic group, with members in the family Cyprinidae, and especially the genera Barbus and Puntius, but many others also.
Barreleyes, also known as spook fish (a name also applied to several species of chimaera), are small deep-sea argentiniform fish comprising the family Opisthoproctidae found in tropical-to-temperate waters of the Atlantic, Pacific, and Indian Oceans.
Batrachoididae is the only family in the ray-finned fish order Batrachoidiformes.
The beardfishes consist of a single extant genus, Polymixia, of deep-sea marine ray-finned fish named for their pair of long hyoid barbels.
Beloniformes is an order composed of six families (and about 264 species) of freshwater and marine ray-finned fish.
The Beryciformes are a poorly-understood order of carnivorous ray-finned fishes consisting of 7 families, 30 genera, and 161 species.
Bichirs and the reedfish comprise the Polypteridae, a family of archaic-looking ray-finned fishes and the only family in the order Polypteriformes.
The big-scale sand smelt (Atherina boyeri) is a species of fish in the Atherinidae family.
The term billfish refers to a group of predatory fish characterised by prominent bills, or rostra, and by their large size; some are longer than 4 m (13 ft).
Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
Blenny (from the Greek ἡ βλέννα and τό βλέννος, mucus, slime) is a common name for a type of fish.
The Bombay duck or bummalo, Harpadon nehereus, (Bengali: bamaloh or loytta, Gujarati: બુમલો, Marathi: bombil, Sinhala: බොම්බෙලි, Urdu: بمبل مچھلی) is a lizardfish.
The bonefish (Albula vulpes) is the type species of the bonefish family (Albulidae), the only family in order Albuliformes.
Albulidae is a family of fish, commonly known as the bonefishes, that are popular as game fish in Florida, select locations in the South Pacific and the Bahamas (where two bonefish are featured on the 10-cent coin) and elsewhere.
Bowfin (Amia calva) are basal bony fishes related to gars in the infraclass Holostei.
The butterflyfish are a group of conspicuous tropical marine fish of the family Chaetodontidae; the bannerfish and coralfish are also included in this group.
Boarfishes are a small family, Caproidae, of marine fishes comprising two genera and 12 species.
Carp are various species of oily freshwater fish from the family Cyprinidae, a very large group of fish native to Europe and Asia.
Cartilage is a resilient and smooth elastic tissue, a rubber-like padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components.
Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish.
The Cenozoic Era meaning "new life", is the current and most recent of the three Phanerozoic geological eras, following the Mesozoic Era and, extending from 66 million years ago to the present day.
Centrarchidae (better known as sunfish) are a family of freshwater ray-finned fish belonging to the order Perciformes.
The Cetomimiformes or whalefishes are an order of small, deep-sea ray-finned fish.
Characiformes is an order of ray-finned fish, comprising the characins and their allies.
Chondrostei are primarily cartilaginous fish showing some degree of ossification.
Cichlids are fish from the family Cichlidae in the order Perciformes.
Cladistia is a clade of bony fishes that currently consists of few anguilliform (eel-shaped) remnants of an ancient diversity.
A cladogram (from Greek clados "branch" and gramma "character") is a diagram used in cladistics to show relations among organisms.
In biological classification, class (classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank.
Clupeiformes is the order of ray-finned fish that includes the herring family, Clupeidae, and the anchovy family, Engraulidae.
Cod is the common name for the demersal fish genus Gadus, belonging to the family Gadidae.
The cornetfishes or flutemouths are a small family, the Fistulariidae, of extremely elongated fishes in the order Syngnathiformes.
Crossognathiformes were an extinct order of prehistoric ray-finned fish.
Ctenothrissiformes were an extinct order of prehistoric ray-finned fish.
The cutlassfishes are about 40 species of predatory fish in the family Trichiuridae (order Perciformes) found in seas throughout the world.
Cypriniformes is an order of ray-finned fish, including the carps, minnows, loaches and relatives.
Cyprinodontiformes is an order of ray-finned fish, comprising mostly small, freshwater fish.
Danio is a genus of small freshwater fish in the family Cyprinidae found in South and Southeast Asia, commonly kept in aquaria.
Diplecogaster bimaculata, the two-spotted clingfish, is a species of fish in the family Gobiesocidae found in Black Sea, Mediterranean Sea and Atlantic Ocean.
A dorsal fin is a fin located on the back of most marine and freshwater vertebrates such as fishes, cetaceans (whales, dolphins, and porpoises), and the (extinct) ichthyosaur.
The common name dory (from the Middle English dorre, from the Middle French doree, lit. "gilded one") is shared (officially and colloquially) by members of several different families of large-eyed, silvery, deep-bodied, laterally compressed, and roughly discoid marine fish.
Drepane is a genus of fishes known commonly as the sicklefishes.
An eel is any ray-finned fish belonging to the order Anguilliformes, which consists of four suborders, 20 families, 111 genera and about 800 species.
The electric eel (Electrophorus electricus) is a South American electric fish, and the only species in its genus.
Electroreception or electroception is the biological ability to perceive natural electrical stimuli.
The Elopidae are a family of ray-finned fish containing the single genus Elops.
The Elopiformes are the order of ray-finned fish including the tarpons, tenpounders, and ladyfish, as well as a number of extinct types.
The superorder Elopomorpha contains a variety of types of fishes that range from typical silvery-colored species, such as the tarpons and ladyfishes of the Elopiformes and the bonefishes of the Albuliformes, to the long and slender, smooth-bodied eels of the Anguilliformes.
The emperor angelfish (Pomacanthus imperator) is a species of marine angelfish.
Ephippidae is a family containing the spadefishes, with about eight genera and a total of 20 marine species.
The Esociformes are a small order of ray-finned fish, with two families, the Umbridae (mudminnows) and the Esocidae (pikes).
Esox is a genus of freshwater fish, the only living genus in the family Esocidae—the esocids which were endemic to North America and Eurasia during the Paleogene through present.
Estonia (Eesti), officially the Republic of Estonia (Eesti Vabariik), is a sovereign state in Northern Europe.
The European conger (Conger conger) is a species of conger of the family Congridae.
The European eel (Anguilla anguilla) is a species of eel, a snake-like, catadromous fish.
The Euteleostei or euteleosts is a clade of bony fishes within the Teleostei that evolved some 240 million years ago.
Exaptation (Stephen Jay Gould and Elisabeth Vrba's proposed replacement for what he considered the teleologically-loaded term "pre-adaptation") and the related term co-option describe a shift in the function of a trait during evolution.
External fertilization is a male organism’s sperm fertilizing a female organism’s egg outside of the female’s body.
Fangtooths are beryciform fish of the family Anoplogastridae (sometimes spelled "Anoplogasteridae") that live in the deep sea.
The filefish (Monacanthidae) are a diverse family of tropical to subtropical tetraodontiform marine fish, which are also known as foolfish, leatherjackets or shingles.
The fire eel (Mastacembelus erythrotaenia) is a relatively large species of spiny eel.
Fish are gill-bearing aquatic craniate animals that lack limbs with digits.
Fins are usually the most distinctive anatomical features of a fish.
FishBase is a global species database of fish species (specifically finfish).
A flatfish is a member of the order Pleuronectiformes of ray-finned demersal fishes, also called the Heterosomata, sometimes classified as a suborder of Perciformes.
The flathead grey mullet (Mugil cephalus) is an important food fish species in the mullet family Mugilidae.
The Florida gar (Lepisosteus platyrhincus) is a species of gar found in the USA from the Savannah River and Ochlockonee River watersheds of Georgia and throughout peninsular Florida.
The Exocoetidae are a family of marine fishes in the order Beloniformes class Actinopterygii.
The flying gurnard (Dactylopterus volitans), also known as the helmet gurnard, is a bottom-dwelling fish of tropical to warm temperate waters on both sides of the Atlantic Ocean.
Fresh water (or freshwater) is any naturally occurring water except seawater and brackish water.
The freshwater hatchetfishes are a family, Gasteropelecidae, of ray-finned fish from South and Central America.
Gadiformes are an order of ray-finned fish, also called the Anacanthini, that includes the cod and its allies.
The Galaxiidae are a family of mostly small freshwater fish in the Southern Hemisphere.
Gars (or garpike) are members of the Lepisosteiformes (or Semionotiformes), an ancient holosteian order of ray-finned fish; fossils from this order are known from the Late Jurassic onwards.
Gasterosteiformes is an order of ray-finned fishes that includes the sticklebacks and relatives.
The giant oarfish (Regalecus glesne) is a species of oarfish of the family Regalecidae.
Clingfishes are fishes of the family Gobiesocidae, belonging to the order Gobiesociformes.
The Gobiesociformes are an order of ray-finned fish with only one known family, the clingfishes (Gobiesocidae).
The Gobiiformes are an order of fish that includes the gobies.
Gobies are fishes of the family Gobiidae, one of the largest fish families comprising more than 2,000 species in more than 200 genera.
The goldeye is a freshwater fish found in Canada and the northern United States.
The goldfish (Carassius auratus) is a freshwater fish in the family Cyprinidae of order Cypriniformes.
The Gonorynchiformes are an order of ray-finned fish that includes the important food source, the milkfish (Chanos chanos, family Chanidae), and a number of lesser-known types, both marine and freshwater.
Gonostoma is a genus of bristlemouths.
The Gonostomatidae are a family of mesopelagic marine fish, commonly named bristlemouths, lightfishes, or anglemouths.
Gouramis, or gouramies, are a group of freshwater anabantiform fishes that comprise the family Osphronemidae.
The Guildayichthyiformes is a prehistoric order or marine fish from the Mississippian of Montana.
The Gulf toadfish (Opsanus beta) is a species of toadfish found in the Gulf of Mexico.
The Gymnotiformes are a group of teleost bony fishes commonly known as the Neotropical or South American knifefish.
Haemulidae is a family of fishes in the order Perciformes known commonly as grunts.
Hagfish, the class '''Myxini''' (also known as Hyperotreti), are eel-shaped, slime-producing marine fish (occasionally called slime eels).
Halosaurs are eel-shaped fishes found only at great ocean depths.
Herring are forage fish, mostly belonging to the family Clupeidae.
Hiodontiformes is a relatively new order of fish, consisting of the two living species of the mooneye family Hiodontidae and three genera of extinct types.
Holocentridae is a family of ray-finned fish, belonging to the order Beryciformes with the members of the subfamily Holocentrinae typically known as squirrelfish, while the members of Myripristinae typically are known as soldierfish.
Holostei are bony fish.
The houndfish (Tylosurus crocodilus) is a game fish of the family Belonidae.
Hydrocynus vittatus, the African tigerfish, tiervis or ngwesh is a predatory freshwater fish distributed throughout much of Africa.
Hypomesus nipponensis (wakasagi) is an important food fish native to the lakes and estuaries of Hokkaido, Japan.
The Integrated Taxonomic Information System (ITIS) is an American partnership of federal agencies designed to provide consistent and reliable information on the taxonomy of biological species.
Internal fertilization is the union of an egg cell with a sperm during sexual reproduction inside the body of a parent.
Istiophoriformes is an order of bony fish which is not recognised by some authorities while others include the two extant billfish families, Xiphiidae and Istiophoridae, and others include the barracudas, the family Sphyraenidae.
The jellynose fishes or tadpole fishes are the small order Ateleopodiformes.
John Dory, St Pierre or Peter's Fish, refers to fish of the genus Zeus, especially Zeus faber, of widespread distribution.
A killifish is any of various oviparous (egg-laying) cyprinodontiform fish (including families Aplocheilidae, Cyprinodontidae, Fundulidae, Profundulidae and Valenciidae).
Knifefish may refer to several knife-shaped fishes.
Lampriformes is an order of ray-finned fish.
Lancetfishes are large oceanic predatory fishes in the genus Alepisaurus ("scaleless lizard"), the only living genus in the family Alepisauridae.
Lanternfishes (or myctophids, from the Greek μυκτήρ myktḗr, "nose" and ophis, "serpent") are small mesopelagic fish of the large family Myctophidae.
The leafy seadragon or Glauert's seadragon, Phycodurus eques, is a marine fish in the family Syngnathidae, which includes seadragons, pipefish, and seahorses.
Leiognathidae, the ponyfishes, slipmouths or slimys / slimies, are a small family of fishes in the order Perciformes.
Lepidogalaxias salamandroides is a species of small fish of Western Australia.
Live-bearing aquarium fish, often simply called livebearers, are fish that retain the eggs inside the body and give birth to live, free-swimming young.
The louvar or luvar, Luvaris imperialis, is a species of perciform fish, the only extant species in the genus Luvaris and family Luvaridae.
Lungfish are freshwater rhipidistian fish belonging to the subclass Dipnoi.
Snappers are a family of perciform fish, Lutjanidae, mainly marine, but with some members inhabiting estuaries, feeding in fresh water.
Mackerel is a common name applied to a number of different species of pelagic fish, mostly, but not exclusively, from the family Scombridae.
Mammals are the vertebrates within the class Mammalia (from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.
The mangrove killifish or mangrove rivulus, Kryptolebias marmoratus (syn. Rivulus marmoratus), is a species of fish in the Aplocheilidae family.
Marine hatchetfishes or deep-sea hatchetfishes are small deep-sea mesopelagic ray-finned fish of the stomiiform subfamily Sternoptychinae.
A marlin is a fish from the family Istiophoridae, which includes about 10 species.
The Mesozoic Era is an interval of geological time from about.
The milkfish (Chanos chanos) is the sole living species in the family Chanidae.
Minnows are small freshwater fish of the family Cyprinidae.
The mirror dory (Zenopsis nebulosa) is a dory of the family Zeidae, found in the southern Pacific Ocean at depths of between 30 and 800 m. Its length is up to 70 cm.
The mojarras are a family, Gerreidae, of fish in the order Perciformes.
Pinecone fishes are small and unusual beryciform marine fish of the family Monocentridae.
The mooneyes are a family, the Hiodontidae, of ray-finned fish comprising two living and three extinct species in the genus Hiodon.
The Moorish idol (Zanclus cornutus), is a marine fish species, the sole extant representative of the family Zanclidae (from the Greek ζαγκίος, zagkios, "oblique") in order Perciformes.
The mullets or grey mullets are a family (Mugilidae) of ray-finned fish found worldwide in coastal temperate and tropical waters, and some species in fresh water.
The Myctophiformes are an order of ray-finned fishes consisting of two families of deep-sea marine fish, most notably the highly abundant lanternfishes (Myctophidae).
Myctophum punctatum is a species of mesopelagic fish in the family Myctophidae.
Myripristinae is a subfamily of the Holocentridae fish.
Neopterygii are a group of fish.
The Neoteleostei is a large clade of bony fish that includes the Ateleopodidae (jellynoses), Aulopiformes (lizardfish), Myctophiformes (lanternfish), Polymixiiformes (beardfish), Percopsiformes (Troutperches), Gadiformes (cods), Zeiformes (dories), Lampriformes (oarfish, opah, ribbonfish), and the populous clade of the Acanthopterygii which includes the Beryciformes (squirrelfish) and the Percomorpha (a large number of families such as the tuna, seahorses, gobies, cichlids, flatfish, wrasse, perches, anglerfish, pufferfish).
The northern pike (Esox lucius), known simply as a pike in Britain, Ireland, most of Canada, and most parts of the United States (once called luce when fully grown; also called jackfish or simply "northern" in the U.S. Upper Midwest and in Manitoba), is a species of carnivorous fish of the genus Esox (the pikes).
The Notacanthiformes are an order of deep-sea ray-finned fishes, consisting of the families Halosauridae and Notacanthidae (spiny eels).
Nothobranchius rachovii, or the bluefin notho, is a species of freshwater annual killifish from Mozambique and South Africa.
Kurtus is a genus of perciform fishes, called the nurseryfishes, forehead brooders, or incubator fish, native to fresh, brackish and coastal marine waters ranging from India, through southeast Asia to New Guinea and northern Australia.
Oarfish are large, greatly elongated, pelagic lampriform fish belonging to the small family Regalecidae.
An ocean (the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere.
The ocean sunfish or common mola (Mola mola) is the heaviest known bony fish in the world.
Ontogeny (also ontogenesis or morphogenesis) is the origination and development of an organism, usually from the time of fertilization of the egg to the organism's mature form—although the term can be used to refer to the study of the entirety of an organism's lifespan.
Opahs (also commonly known as moonfish, sunfish (not to be confused with Molidae), kingfish, redfin ocean pan, and Jerusalem haddock) are large, colorful, deep-bodied pelagic lampriform fishes comprising the small family Lampridae (also spelled Lamprididae).
Ophidiiformes is an order of ray-finned fish that includes the cusk-eels (family Ophidiidae), pearlfishes (family Carapidae), brotulas (family Bythitidae), and others.
The Osmeriformes comprise an order of ray-finned fish that includes the true or freshwater smelts and allies, such as the galaxiids and noodlefishes; they are also collectively called osmeriforms.
Ossification (or osteogenesis) in bone remodeling is the process of laying down new bone material by cells called osteoblasts.
Ostariophysi is the second-largest superorder of fish.
Osteichthyes, popularly referred to as the bony fish, is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue, as opposed to cartilage.
Osteoglossiformes (Greek: "bony tongues") is a relatively primitive order of ray-finned fish that contains two sub-orders, the Osteoglossoidei and the Notopteroidei.
The Osteoglossomorpha are a group of bony fish in the Teleostei.
The Otocephala is a clade of bony fishes within the Teleostei that evolved some 230 million years ago.
Oviparous animals are animals that lay eggs, with little or no other embryonic development within the mother.
Ovoviviparity, ovovivipary, or ovivipary, is a mode of reproduction in animals in which embryos that develop inside eggs remain in the mother's body until they are ready to hatch.
Pachycormiformes is an extinct order of ray-finned fish known from Mesozoic deposits from Eurasia and the Americas.
Paddlefish (family Polyodontidae) are basal Chondrostean ray-finned fish.
Paedocypris is a genus of tiny cyprinid fish found in swamps and streams on the Southeast Asian islands of Borneo, Sumatra and Bintan.
The Palaeonisciformes are an extinct order of early ray-finned fishes (Actinopterygii) which began in the Late Silurian and ended in the Late Cretaceous.
Paracanthopterygii is a superorder of fishes.
In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and all descendants of that ancestor excluding a few—typically only one or two—monophyletic subgroups.
Parrotfishes are a group of marine species found in relatively shallow tropical and subtropical oceans around the world.
Pearlfish are marine fish in the Carapidae family of ray-finned fishes.
The seamoths make up a family of fishes, the Pegasidae, within the order Gasterosteiformes.
The gulper eel (Eurypharynx pelecanoides) is a deep-sea fish rarely seen by humans, though it is occasionally caught in fishing nets.
Peltopleuriformes were an extinct order of prehistoric bony fish.
Pelvic fins are paired fins located on the ventral surface of fish.
Nannostomus (from the Greek: nanno.
Perciformes, also called the Percomorpha or Acanthopteri, are the most numerous order of vertebrates, containing about 41% of all bony fish.
The Percomorpha is a large clade of bony fish that includes the tuna, seahorses, gobies, cichlids, flatfish, wrasse, perches, anglerfish, and pufferfish.
The Percopsiformes are a small order of ray-finned fishes, comprising the trout-perch and its allies.
Percopsis omiscomaycus also known as the trout-perch, the grounder or the sand minnow, is one of two species in the family Percopsidae.
Perleidiformes are an extinct order of prehistoric ray-finned fish.
The Permian is a geologic period and system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic period 251.902 Mya.
Pholidichthys leucotaenia, commonly known as the convict blenny/goby or the engineer blenny/goby, is a marine fish from the west-central Pacific Ocean.
Pholidopleuriformes is an extinct order of prehistoric ray-finned fish.
Piaractus mesopotamicus, the small-scaled pacu, Paraná River pacu or simply pacu (a name shared with other species), is a South American ray-finned fish that is native to the Paraguay-Paraná River basin,Nico, L.; and B. Loftus (7 October 2012).
Pipefishes or pipe-fishes (Syngnathinae) are a subfamily of small fishes, which, together with the seahorses and seadragons, form the family Syngnathidae.
A piranha or piraña, a member of family Characidae in order Characiformes, is a freshwater fish that inhabits South American rivers, floodplains, lakes and reservoirs.
The pirate perch (Aphredoderus sayanus) is a freshwater fish that commonly inhabits coastal waters along the east coast of the United States and the backwater areas of the Mississippi Valley.
The plate fish (Bothus lunatus) is a flounder in the genus Bothus, found in the warmer parts of the Atlantic including the Caribbean.
Polypterus weeksii, the mottled bichir, is a fish in the family Polypteridae found in the central basin of the Congo River.
Pompanos are marine fishes in the genus Trachinotus in the family Carangidae (better known as "jacks").
The Priacanthidae, the bigeyes, are a family of 18 species of marine fishes.
Protacanthopterygii is a ray-finned fish taxon ranked as a superorder of the infraclass Teleostei.
The Prussian carp, silver Prussian carp or Gibel carp (Carassius gibelio), is a member of the family Cyprinidae, which includes many other fish, such as the common carp, and the smaller minnows.
Ptycholepiformes were an order of extinct prehistoric ray-finned fish.
Pycnodontiformes is an extinct order of bony fish.
The rainbow trout (Oncorhynchus mykiss) is a trout and species of salmonid native to cold-water tributaries of the Pacific Ocean in Asia and North America.
The rainbowfish are a family (Melanotaeniidae) of small, colourful, freshwater fish found in northern and eastern Australia, New Guinea, islands in Cenderawasih Bay, and the Raja Ampat Islands in Indonesia.
Rasbora is a genus of fish in the family Cyprinidae.
The red lionfish (Pterois volitans) is a venomous coral reef fish in the family Scorpaenidae, order Scorpaeniformes.
The red-bellied piranha, also known as the red piranha (Pygocentrus nattereri), is a species of piranha native to South America, found in the Amazon, Paraguay, Paraná and Essequibo basins, as well as coastal rivers of northeastern Brazil.
The reedfish, ropefish (more commonly used in the United States), or snakefish, Erpetoichthys calabaricus, is a species of freshwater fish in the bichir family and order.
Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.
The ribbonfish are any lampriform fishes in the family Trachipteridae.
The ricefishes are a family (Adrianichthyidae) of small ray-finned fish that are found in fresh and brackish waters from India to Japan and out into the Malay Archipelago, most notably Sulawesi (where the Lake Poso and Lore Lindu species are known as buntingi).
Russia (rɐˈsʲijə), officially the Russian Federation (p), is a country in Eurasia. At, Russia is the largest country in the world by area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 144 million people as of December 2017, excluding Crimea. About 77% of the population live in the western, European part of the country. Russia's capital Moscow is one of the largest cities in the world; other major cities include Saint Petersburg, Novosibirsk, Yekaterinburg and Nizhny Novgorod. Extending across the entirety of Northern Asia and much of Eastern Europe, Russia spans eleven time zones and incorporates a wide range of environments and landforms. From northwest to southeast, Russia shares land borders with Norway, Finland, Estonia, Latvia, Lithuania and Poland (both with Kaliningrad Oblast), Belarus, Ukraine, Georgia, Azerbaijan, Kazakhstan, China, Mongolia and North Korea. It shares maritime borders with Japan by the Sea of Okhotsk and the U.S. state of Alaska across the Bering Strait. The East Slavs emerged as a recognizable group in Europe between the 3rd and 8th centuries AD. Founded and ruled by a Varangian warrior elite and their descendants, the medieval state of Rus arose in the 9th century. In 988 it adopted Orthodox Christianity from the Byzantine Empire, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Rus' ultimately disintegrated into a number of smaller states; most of the Rus' lands were overrun by the Mongol invasion and became tributaries of the nomadic Golden Horde in the 13th century. The Grand Duchy of Moscow gradually reunified the surrounding Russian principalities, achieved independence from the Golden Horde. By the 18th century, the nation had greatly expanded through conquest, annexation, and exploration to become the Russian Empire, which was the third largest empire in history, stretching from Poland on the west to Alaska on the east. Following the Russian Revolution, the Russian Soviet Federative Socialist Republic became the largest and leading constituent of the Union of Soviet Socialist Republics, the world's first constitutionally socialist state. The Soviet Union played a decisive role in the Allied victory in World War II, and emerged as a recognized superpower and rival to the United States during the Cold War. The Soviet era saw some of the most significant technological achievements of the 20th century, including the world's first human-made satellite and the launching of the first humans in space. By the end of 1990, the Soviet Union had the world's second largest economy, largest standing military in the world and the largest stockpile of weapons of mass destruction. Following the dissolution of the Soviet Union in 1991, twelve independent republics emerged from the USSR: Russia, Ukraine, Belarus, Kazakhstan, Uzbekistan, Armenia, Azerbaijan, Georgia, Kyrgyzstan, Moldova, Tajikistan, Turkmenistan and the Baltic states regained independence: Estonia, Latvia, Lithuania; the Russian SFSR reconstituted itself as the Russian Federation and is recognized as the continuing legal personality and a successor of the Soviet Union. It is governed as a federal semi-presidential republic. The Russian economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in 2015. Russia's extensive mineral and energy resources are the largest such reserves in the world, making it one of the leading producers of oil and natural gas globally. The country is one of the five recognized nuclear weapons states and possesses the largest stockpile of weapons of mass destruction. Russia is a great power as well as a regional power and has been characterised as a potential superpower. It is a permanent member of the United Nations Security Council and an active global partner of ASEAN, as well as a member of the G20, the Shanghai Cooperation Organisation (SCO), the Council of Europe, the Asia-Pacific Economic Cooperation (APEC), the Organization for Security and Co-operation in Europe (OSCE), and the World Trade Organization (WTO), as well as being the leading member of the Commonwealth of Independent States (CIS), the Collective Security Treaty Organization (CSTO) and one of the five members of the Eurasian Economic Union (EEU), along with Armenia, Belarus, Kazakhstan and Kyrgyzstan.
Saccopharyngiformes is an order of unusual ray-finned fish, superficially similar to eels, but with multiple internal differences.
Salminus brasiliensis (dourado, dorado, golden dorado, river tiger or jaw characin) is a large, predatory characiform freshwater fish found in central and east-central South America.
Salmon is the common name for several species of ray-finned fish in the family Salmonidae.
Salmonidae is a family of ray-finned fish, the only living family currently placed in the order Salmoniformes.
The sandperches are a family, Pinguipedidae, of fishes in the percomorph order Trachniniformes.
The Sarcopterygii or lobe-finned fish (from Greek σαρξ sarx, flesh, and πτερυξ pteryx, fin) – sometimes considered synonymous with Crossopterygii ("fringe-finned fish", from Greek κροσσός krossos, fringe) – constitute a clade (traditionally a class or subclass) of the bony fish, though a strict cladistic view includes the terrestrial vertebrates.
Sargocentron spiniferum, common name sabre squirrelfish, giant squirrelfish and spiny squirrelfish, is a large Indo-Pacific species of squirrelfish belonging to the family Holocentridae.
Saurichthyiformes is a group of ray-finned fish which existed in China, Europe and North America, during the late Permian to early Jurassic periods.
Sauropsida ("lizard faces") is a group of amniotes that includes all existing birds and other reptiles as well as their fossil ancestors and other extinct relatives.
In most biological nomenclature, a scale (Greek λεπίς lepis, Latin squama) is a small rigid plate that grows out of an animal's skin to provide protection.
The scats are a small family, Scatophagidae, of fishes in the order Perciformes.
Scombriformes is an order of bony fish containing nine families which were classified under the suborders Scombroidei and Stromateoidei, of the wider grouping known as Perciformes, Nelson (2016) recognised the order but subsequent workers have suggested that Scombriformes forms part of the larger Pelagiaria clade.
The Scorpaeniformes are a diverse order of ray-finned fish, including the well-known lionfish, but have also been called the Scleroparei.
Sea bass is a common name for a variety of different species of marine fish.
Seahorse (also written sea-horse and sea horse) is the name given to 54 species of small marine fishes in the genus Hippocampus.
Semionotiformes ("flag-back form") is an order of primitive, ray-finned, primarily freshwater fish from the Triassic to the Cretaceous.
Sequential hermaphroditism (called dichogamy in botany) is a type of hermaphroditism that occurs in many fish, gastropods, and plants.
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head.
The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago (Mya), to the beginning of the Devonian Period, Mya.
Sladenia shaefersi is a species of fish in the Lophiidae family.
Smelts are a family of small fish, the Osmeridae, found in the Atlantic and Pacific Oceans.
The snakeheads are members of the freshwater perciform fish family Channidae, native to parts of Africa and Asia.
The Sparidae are a family of fish in the order Perciformes, commonly called sea breams and porgies.
Spectrunculus grandis is a species of ray-finned fish in the cusk-eel family known by the common names pudgy cusk-eel and giant cusk-eel.
The name spiny eel is used to describe members of two different families of fish: the freshwater Mastacembelidae of Asia and Africa, and the marine (and generally deep sea) Notacanthidae.
Spiracles are openings on the surface of some animals, which usually lead to respiratory systems.
The stargazers are a family, Uranoscopidae, of perciform fish that have eyes on top of their heads (hence the name).
The Stephanoberyciformes are an order of marine ray-finned fishes, consisting of about 68 species, the majority (61) of which belong to the ridgehead family (Melamphaidae).
Stiassnyiformes is an order of bony fish (Teleostei) proposed in 2009.
Stomiiformes is an order of deep-sea ray-finned fishes of very diverse morphology.
Sturgeon is the common name for the 27 species of fish belonging to the family Acipenseridae.
The swamp eels (also written "swamp-eels") are a family (Synbranchidae) of freshwater eel-like fishes of the tropics and subtropics.
Sweden (Sverige), officially the Kingdom of Sweden (Swedish), is a Scandinavian country in Northern Europe.
Sweepers are small, tropical marine (occasionally brackish) perciform fish of the family Pempheridae.
Swordfish (Xiphias gladius), also known as broadbills in some countries, are large, highly migratory, predatory fish characterized by a long, flat bill.
Synbranchiformes, often called swamp eels, is an order of ray-finned fishes that are eel-like but have spiny rays, indicating that they belong to the superorder Acanthopterygii.
The Syngnathiformes are an order of ray-finned fishes that includes the pipefishes and seahorses.
Tarpons are large air-breathing fish of the genus Megalops; one species is native to the Atlantic, and the other to the Indo-Pacific Seas.
Tarasiiformes is an extinct order of prehistoric ray-finned fish.
The teleosts or Teleostei (Greek: teleios, "complete" + osteon, "bone") are by far the largest infraclass in the class Actinopterygii, the ray-finned fishes, and make up 96% of all extant species of fish.
Grunters or tigerperches are fishes in the family Terapontidae (also spelled Teraponidae, Theraponidae or Therapontidae).
A tetra is one of several species of small freshwater fish from Africa, Central America, and South America belonging to the biological family Characidae and to its former subfamilies Alestidae (the "African tetras") and Lebiasinidae.
The Tetraodontidae are a family of primarily marine and estuarine fish of the order Tetraodontiformes.
The Tetraodontiformes are an order of highly derived ray-finned fish, also called the Plectognathi.
The superclass Tetrapoda (from Greek: τετρα- "four" and πούς "foot") contains the four-limbed vertebrates known as tetrapods; it includes living and extinct amphibians, reptiles (including dinosaurs, and its subgroup birds) and mammals (including primates, and all hominid subgroups including humans), as well as earlier extinct groups.
The three-spined stickleback (Gasterosteus aculeatus) is a fish native to most inland coastal waters north of 30°N.
Jack mackerels or saurels are marine fish in the genus Trachurus of the family Carangidae.
Trisopterus luscus (bib, pout whiting, pout or most commonly pouting) is a seafish belonging to the cod family (Gadidae).
Trout is the common name for a number of species of freshwater fish belonging to the genera Oncorhynchus, Salmo and Salvelinus, all of the subfamily Salmoninae of the family Salmonidae.
The tube-eye or thread-tail, Stylephorus chordatus, is a deep-sea fish, the only fish in the genus Stylephorus and family Stylephoridae.
A tuna is a saltwater fish that belongs to the tribe Thunnini, a sub-grouping of the mackerel family (Scombridae).
The twait shad or twaite shad (Alosa fallax) is a species of fish in the family Clupeidae.
The variegated lizardfish (Synodus variegatus) is a lizardfish of the family Synodontidae found in the western Pacific and Indian Oceans, at depths from 4 to 90 m. It can reach a maximum length of 40 cm.
The velvet whalefish (Barbourisia rufa) is a deep-sea whalefish, the sole known member of its family Barbourisiidae.
In the vertebrate spinal column, each vertebra is an irregular bone with a complex structure composed of bone and some hyaline cartilage, the proportions of which vary according to the segment of the backbone and the species of vertebrate.
Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).
A viperfish is any species of marine fish in the genus Chauliodus.
Among animals, viviparity is development of the embryo inside the body of the parent, eventually leading to live birth, as opposed to reproduction by laying eggs that complete their incubation outside the parental body.
The wels catfish (or; Silurus glanis), also called sheatfish, is a large species of catfish native to wide areas of central, southern, and eastern Europe, in the basins of the Baltic, Black, and Caspian Seas.
The wrasses are a family, Labridae, of marine fish, many of which are brightly colored.
The yellowmargin triggerfish, Pseudobalistes flavimarginatus, are marine fish in the triggerfish family Balistidae.
The Zeiformes are a small order of marine ray-finned fishes most notable for the dories, a group of common food fish.
Actinopterygian, Actinopterygians, Aspidorhynchei, Chondrost, Ray finned fish, Ray-Finned Fish, Ray-fin, Ray-finned, Ray-finned fish, Ray-finned fishes, Teleostan, Teleostean, The Actinopterygii, The ray-finned fishes.