Saltwater fish
Fish that live all or much of their lives in seawater / From Wikipedia, the free encyclopedia
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Saltwater fish, also called marine fish or sea fish, are fish that live in seawater. Saltwater fish can swim and live alone or in a large group called a school.[1]
Saltwater fish are very commonly kept in aquariums for entertainment. Many saltwater fish are also caught to be eaten,[2][3] or grown in aquaculture. However, many fish species have been overfished and are otherwise threatened by marine pollution or ecological changes caused by climate change.