catadromous

Definitions

1. Living in fresh water as an adult, but breeding in the sea.
2. Of a fern in which the first veins in a frond segment are produced towards the base of the frond.

Equivalents

Examples

“Bird migration routes favor marshes and river valleys, as do, more obviously, the movement of anadromous salmon and, the mirror image, catadromous eels, to mention⟳ only two of the numerous migrating fish⟳ species.”

CEFR level