blenny
/ˈblɛni/
noun
- A small, elongated fish that lives in shallow coastal waters, often hiding in rocks or crevices.
- While snorkeling, I spotted a colorful blenny peeking out from a crack in the coral.
- My aquarium has a friendly blenny that likes to perch on the filter.
- The blenny uses its fins to grip rocks so it doesn't get swept away by waves.