amphidromous Applied to the migratory behaviour of fish moving from freshwater to the sea, and vice versa. Such migration is not for breeding purposes, but occurs regularly at some stage of the life cycle (feeding, overwintering, etc.). Compare DIADROMOUS. See also ANADROMOUS; CATADROMOUS; POTAMODROMOUS.

amphidromous Applied to the migratory behaviour of fish moving from fresh water to the sea, and vice versa. Such migration is not for breeding purposes, but occurs regularly at some stage of the life cycle (feeding, overwintering, etc.). Compare diadromous. See also anadromous; catadromous; and potamodromous.