Clownfish are small, brightly colored fish known for their orange bodies with white stripes and friendly personalities. They live among sea anemones, forming a symbiotic relationship where both species benefit — the anemone protects the clownfish with its stinging tentacles, and the clownfish defends the anemone from predators. Clownfish are also fascinating for their unique gender-changing ability: all are born male, but the dominant one in a group can become female.