Freshwater

Freshwater fish spend part or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%.

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Synodontis nigriventris

Body stocky, slightly flattened at the sides. Back more convex than abdomen, eyes large, mouth lower …

Amia calva

The ancient fish, described by some as looking more like a snake than a fish, has …

Osmerus mordax

A slender, silvery fish with a pale green or olive green back. When fresh, the sides …