caudal keel en · NOUN
Meanings
- A lateral ridge found just anterior to each side of the tail fin on the caudal peduncle of some types of fast-swimming fish. The keels improve the stability of the fish's attitude at speed in the water, and strengthen the support of the caudal fin.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| caudal keels | Number=Plur | lexicographic |