What does "finlet" mean?

Small non-retractable fins, generally on the caudal peduncle between the last dorsal or anal fin and the caudal fin of some fishes. In some groups, such as tuna, finlets are rayless.

Finlet

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
Small non-retractable fins, generally on the caudal peduncle between the last dorsal or anal fin and the caudal fin of some fishes. In some groups, such as tuna, finlets are rayless.

Etymology

From fin + -let.

Related phrases

anal fin caudal fin dorsal fin

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.