diadromous
A fish that migrates between fresh and salt waters.
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Results for “diadromous”
Ichthyological terms, not general ones.
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amphidromy
A form of diadromy in which fishes migrate between fresh and marine water as part of their life cycle for some purpose other than spawning, e.g., newly-hatched, arvae may be swept downstream into the sea where they spend a period of time before migrating back into fresh water to mature and eventually reproduce.
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pelagic phase
Period of time during the life cycle spent floating freely in the water column, usually as a larval constituent of plankton. Relatively common in marine fishes but also typical of amphidromous and diadromous species.