catadromous(redirected from catadromously)
Also found in: Thesaurus, Medical, Encyclopedia.
Living in fresh water but migrating to marine waters to breed. Used of fish.
(Zoology) (of fishes such as the eel) migrating down rivers to the sea in order to breed. Compare anadromous
[C19: from Greek katadromos, from kata- down + dromos, from dremein to run]
ca•tad•ro•mous(kəˈtæd rə məs)
(of fish) migrating from fresh water to spawn in the sea (disting. from anadromous).
a term describing fish that migrate downriver to spawn.See also: Fish