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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Arapaima gigas

The body of the arapaima is elongated and compressed from the sides. It is covered with …

Clupea pallasi suworowi

The abdominal keel scales of the Chosa herring are developed only behind the base of the …