air bladder
Fishing
A gas-filled sac in the upper part of the body cavity of many bony fishes. It is located just beneath the vertebral column; its principal function is to offset the weight of the heavier tissue such as bone.
A gas-filled sac in the upper part of the body cavity of many bony fishes. It is located just beneath the vertebral column; its principal function is to offset the weight of the heavier tissue such as bone.