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Related to catadromous: diadromous, Fish migration


Living in fresh water but migrating to marine waters to breed. Used of fish.


(kəˈtædrəməs) or


(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]


(kəˈtæd rə məs)

(of fish) migrating from fresh water to spawn in the sea (disting. from anadromous).
[1880–85; cata- + -dromous]


a term describing fish that migrate downriver to spawn.
See also: Fish
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.catadromous - migrating from fresh water to the sea to spawn
anadromous - migrating from the sea to fresh water to spawn
diadromous - (used of fish) migratory between fresh and salt waters
References in periodicals archive ?
9 m, 3-4-pinnate, deltate-ovate, the basal pinnae catadromous, suprabasal pinnae anadromous; rachises, costae, and costules pubescent and conspicuously scaly abaxially, the hairs 0.
Catadromous like eels, bekti spend much of their lives in fresh water but lay their eggs in shallow ocean water and estuaries.
As economic surplus is a precondition for the emergence of socio-economic complexity, the documentation of such facilities related to the production of surpluses in the form of catadromous eels and other fish is essential.
Plasma IGF-I increased immediately in salt water in both catadromous and anadromous salmon, decreasing in both strains over a period of time in salt water.
Yoonhee took me to a famous fish market where I pressed my head against the biggest tanks and tried to listen to the low frequency squeaks and squeals of the eels so that I could share in the adventurous planning of their catadromous journey to the western slopes of the Suruga Seamount near the underwater mountains west of the Mariana Islands where they spawn but of course eels in tanks can't go on catadromous journeys or any other journeys which means they wouldn't bother to squeak and squeal about their plans.
Eel is a catadromous species that grows in freshwater and migrates back to the sea for spawning.
Indeed, historical presence of catadromous American eels (Anguilla rostrata) indicates such a migration was possible (Koster, 1957).