Salmon is a general term for all three categories of salmon, trout and salmon. In addition, Arctic grey trout, Atlantic herring, North American herring and Arctic cold trout also belong to Salmonidae.

Scientists have proved that salmon lived on this earth more than 1 million years ago through the study of ancient fossils. During the Devonian period, boneless fish gradually evolved into later bony fish through evolution.

Scientists have found that there are eleven series and sixty-six species of salmon from the structural characteristics of fish by taxonomic method. All cold-water fish belonging to the family Salmonidae lay eggs and hatch in fresh water.

Extended information:

Salmon is a beautiful fish with a silver body and spots on its back and fins. They usually eat plankton, insect larvae, shrimp and small fish.

They have a good sense of taste. People usually think that salmon swim back to their original birthplace from the ocean by sense of taste, which often goes upstream through many obstacles. Some salmon have been living inland, and they have been living in danshui river all their lives.

Salmon has many natural enemies, such as sharks in the sea, grizzly bears on the land and bald eagles in the sky. For a small salmon, it really takes a lot of courage to do such a thing, but they have no hesitation for future generations.