Freshwater and Estuarine Fishes: General parameter to differentiate freshwater from estuarine habitat is the salinity level of water. Freshwater contains less than 0.5 ppt (Parts Per Thousand) salinity whereas estuarine water contains moderate salinity (generally 14-17 ppt). We can easily
Classification of Cypriniformes
Cypriniformes is an enormously successful group of freshwater fishes. This order contains 3000 or so species, divided into main three lines of development- the characins-piranhas and their relatives- from Central to South American and Africa; the electric eels from tropical