A small, rayless, fleshy dorsal fin present in certain fishes, notably in the salmon family.
More example sentences
- Like all salmonids the grayling has a small adipose fin behind the dorsal fin.
- Another physical characteristic of the brook trout is an adipose fin and a caudal fin that is slightly forked.
- There is no dorsal adipose fin present on Rhadinesthes decimus.
Definition of adipose fin in:
- The British & World English dictionary