Dictionary of Ichthyology  

finlet = one of a series of small fins consisting of a few rays each, separate from each other and found posterior to the dorsal and anal fins, e.g. in Scombridae.

Cybium solandri (= Acanthocybium solandri) from Günther's "Fische der Südsee". Photograph by Brian W. Coad.

©Canadian Museum of Nature
www.briancoad.com