upstream-migrating fish
nounUK /ˌʌpˈstriːm ˈmaɪɡreɪtɪŋ fɪʃ/
US /ˌʌpˈstriːm ˈmaɪɡreɪtɪŋ fɪʃ/
A fish that swims up a river to lay its eggs.
The salmon is an upstream-migrating fish that returns to the river where it was born.
RELATED WORDS
OTHER MEANINGS
2. Fish that travel against the current to reach cooler or safer waters.
Scientists tracked the upstream-migrating fish using tiny tags.
3. A term used in fisheries for fish moving toward their breeding grounds.
The dam was fitted with a passage for upstream-migrating fish.
4. Any fish species that swims upriver as part of its life cycle.
Trout and salmon are well-known upstream-migrating fish.