Question

What does a fish with a swim bladder do when it needs to swim into deeper water? Why?​

Answer 1

Respuesta:

The swim bladder in fish allows you to control buoyancy in the water, so that the animal does not have to make a greater muscular effort when it has to move. This kind of balloon located in the abdominal cavity allows you to swim without sinking beyond the level you need.

I hope my answer helps you.

:D