Question

some fish have ____to help in buoyancy​

Answer 1

some fishes have swim bladder which helps in buoyant force

Answer 2

Answer:

swim bladder,gas bladder,fish maw,or air bladder.

Explanation:

is an iinternal gas filled organ that contributes to the ability ofmany bony fish(but no cartilaginous fish) to control their byoyancy, and thus that stay their current water depth without having to waste energy in swimming