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Aquatic animals (especially freshwater animals) are often of special concern to conservationists because of the fragility of their environments. Aquatic animals are subject to pressure from overfishing/hunting, destructive fishing, water pollution, acidification, climate change and competition from invasive species.
Among freshwater taxa, the Amazonian manatee and river dolphins are completely aquatic and fully dependent on aquatic ecosystems. Semiaquatic freshwater taxa include the Baikal seal, which feeds underwater but rests, molts, and breeds on land; and the capybara and hippopotamus which are able to venture in and out of water in search of food.
Freshwater animals of South America (2 C, 2 P) C. Freshwater crustaceans (11 C, 57 P) F. Freshwater fish (3 C, 27 P) L. Lake animals (4 C) M. Freshwater molluscs (3 C ...
Freshwater animals (11 C, 8 P) Marine animals (14 C, 20 P, 1 F) ... Fictional aquatic animals (8 C, 9 P) L. Aquatic locomotion (1 C, 5 P) Pages in category "Aquatic ...
An aquatic ecosystem is an ecosystem found in and around a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms—aquatic life—that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. [1]
This fish also occurs in estuaries. largest freshwater pufferfish, they are very peaceful with most fish except, other Mbu pufferfish, other fish that will harass them. see above [82] Congo pufferfish: Tetraodon miurus: 15 cm (5.9 in) As it is an ambush pufferfish it is best to house it alone as it will attack tank mates. See above. [83]
Freshwater habitats – including rivers, lakes, ponds, streams, bogs and wetlands – cover less than 1% of the planet’s surface, but support 10% of its animal species, said Catherine Sayer, a zoologist at the International Union for Conservation of Nature in England.
Secondary division freshwater fish normally inhabit freshwater, but can survive in brackish and saltwater for some time. They may enter saltwater voluntarily and disperse across marine water. A third group, peripheral freshwater fish, are fish which normally live in marine water but may enter and survive for some time in freshwater.