Question

Swim bladder is present in

• A. Star fishes
• B. Bony fishes
• C. Carp fishes
• D. All of the above

Answer 1

The correct option is B Bony fishes

Swim bladders also known as swim bladder are found in many bony fish, but are not found in cartilaginous fish. It is located in the body cavity and is derived from an outpocketing of the digestive tube. It contains gas and functions as a hydrostatic organ, enabling the fish to maintain its depth without floating upward or sinking. It also serves as a resonating chamber to produce or receive sound. Hence, option B is correct.