adipose fin


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adipose fin

n.
A fleshy rayless fin located on the back of a fish between the dorsal fin and the caudal fin, found in certain fishes such as salmon, trout, and catfishes.

adipose fin

n
(Zoology) a posterior dorsal fin occurring in some fish, such as those of the salmon and catfish families
References in periodicals archive ?
Diagnostic features: large, prominent adipose fin, short rayed dorsal fin and very long barbels.
With circle hooks it was the opposite--more hookups when hooked near the adipose fin (rear of the dorsal fin).
The 18-pounder, which took a trolled silver Toby, was missing its adipose fin, which indicated it had been bred and stocked by the Loch Lomond Angling Improvement Association, who do sterling work on the loch and its rivers.
Adipose fin long, anterior margin rising gently and then almost straight for the entire length.
3A), but depressed fin pale yellow with oblique rows of dark pigment; adipose fin pale with at least one dark marking dorsally; pectoral fin pale with approximately 6 wavy, irregular bars of dark brown pigment; pelvic fins bright yellow; anal fin yellow; center of caudal fin (at anterior end of fork) and posterior portion of ventral caudal lobe dark gray to brown; dorsal caudal lobe pale with light, dusky pigment on posterior margin; dorsal caudal lobe with 2-3 small brown bars on procurrent rays.
Can't keep wild ones, so everybody's hoping to see that adipose fin clipped off.
The fish have been clipped on the adipose fin between the tail and dorsal fin to enable anglers to identify their catch as a stocked fish.
A salmon's adipose fin, the very small one just forward of the tail and on its back, has no red as one might expect on a brown.
Identifying characteristics include a flap-like adipose fin, a squared, rounded or slightly forked tail, mottled back and sides, and a slight overbite.