What is the function of the swim bladder?

The swim bladder is located in the body cavity and is derived from an outpocketing of the digestive tube. It contains gas (usually oxygen) and functions as a hydrostatic, or ballast, organ, enabling the fish to maintain its depth without floating upward or sinking.

Answer: The crucial and most important function of the swimbladder is hydrostatic.

Explanation: The swim bladder is found in fish. It is an internal organ filled with gas and it enables the fish maintain buoyancy.

It usually contains gas and functions as a hydrostatic enabling the fish to maintain its depth inside water without floating upward or sinking below.