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.
References in periodicals archive ?
This past year, over 1,500 NYC schoolchildren were taught lessons on fish anatomy and adaptations, marine and aquatic food webs, local fish species and fishing regulations.
This reconsideration of topics resulted in better student understanding, Roderick's students came away from their exploration of fish anatomy having also explored the balance of the ecosystem and their personal responsibility to the environment.
To more thoroughly understand the internal layout of the goldfish, the Georgia Tech researchers were advised in fish anatomy by Arthur Popper, chairperson of zoology at the University of Maryland.