16 relations: Benthic zone, Brazil, Callichthyidae, Crustacean, DGH, Fish, Fresh water, Han Nijssen, Insect, List of freshwater aquarium fish species, PH, Plant, South America, Tropics, Worm, Xingu River.
The benthic zone is the ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and some sub-surface layers.
Brazil (Brasil), officially the Federative Republic of Brazil (República Federativa do Brasil), is the largest country in both South America and Latin America.
Callichthyidae is a family of catfishes (order Siluriformes), called armored catfishes due to the two rows of bony plates (or scutes) running down the length of their bodies.
Crustaceans (Crustacea) form a large, diverse arthropod taxon which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill, woodlice, and barnacles.
Degrees of general hardness (dGH or °GH) is a unit of water hardness, specifically of general hardness.
Fish are gill-bearing aquatic craniate animals that lack limbs with digits.
Fresh water (or freshwater) is any naturally occurring water except seawater and brackish water.
Han Nijssen (1935– 2013) at the UvA Album academicum was a Dutch ichthyologist.
Insects or Insecta (from Latin insectum) are hexapod invertebrates and the largest group within the arthropod phylum.
A vast number of aquatic species have successfully adapted to live in the freshwater aquarium.
In chemistry, pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution.
Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae.
South America is a continent in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere.
The tropics are a region of the Earth surrounding the Equator.
Worms are many different distantly related animals that typically have a long cylindrical tube-like body and no limbs.
The Xingu River (Rio Xingu) is a river in north Brazil.