Anadromous fish.
Fish that spends most of its life feeding in the open ocean but that migrates to spawn in fresh water | ||||
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Anadromous fish. Definition from Encyclopedia Dictionaries & Glossaries
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Fish migration
Many types of fish undertake migrations on a regular basis, on time scales ranging from daily to annual, and with distances ranging from a few meters to thousands of kilometers. The purpose usually relates to either feeding or breeding; in some cases the reason for migration is still unknown.
Migratory fish are classified according to the following scheme:
1. diadromous fish travel between salt and fresh water. (Greek: 'Dia' is between) There are three types of diadromous fish:
1. diadromous fish travel between salt and fresh water. (Greek: 'Dia' is between) There are three types of diadromous fish:
- anadromous fish live in the sea mostly, breed in fresh water (Greek: 'Ana' is up; The noun is "anadromy")
- catadromous fish live in fresh water, breed in the sea (Greek: 'Cata' is down)
- amphidromous fish move between fresh and salt water during some part of life cycle, but not for breeding (Greek: 'Amphi' is both)
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