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Rainbow trout
Biwa trout

A trout is a kind of teleost fish that belongs to the Salmoninae subfamily of the Salmonidae family. There are many different kinds of trout. They belong to the same family as the salmon.

Most trouts are fresh water fish. They live in clear streams, rivers and lakes in America, Europe, and Asia.

Trout spend about 80 percent of any given day looking for food. Trout have excellent vision and can focus their eyes in different directions at the same time, which allows them to see in almost every direction at once. It also makes them hard to catch.

To distinguish a trout from other species, look for a second dorsal fin (or adipose fin). Also, look for spots in mature trout and parr marks in the young.