Question

The swim bladder in fish is an organ for _____.

Answer 1

Fishes:

1. They are aquatic vertebrates.
2. They show the presence of gills but the absence of limbs with digits such as fingers or toes.

Swim bladder in fish:

1. In the dorsal coelomic cavity of fish, a gas-filled organ called the swim bladder is present.
2. The main function of the swim bladder is to maintain the buoyancy whose main function is to stay for a long time at their current water depth without utilizing much energy for swimming.
3. It is owned by most bony fishes.

Final answer: Swim bladder in fish is an organ for buoyancy.