Clownfish, also known as anemonefish, are vibrant, small-sized marine fish belonging to the Pomacentridae family. They inhabit warm, shallow waters of the Indian and Pacific Oceans, predominantly around coral reefs. These fish are known for their symbiotic relationship with sea anemones, which provide protection and food, while clownfish defend the anemone from predators. Clownfish exhibit sequential hermaphroditism, meaning they can change sex in response to social cues. They are omnivorous, feeding on algae, plankton, and small invertebrates. Their striking orange, white, and black coloration, along with their unique behavior, make them popular aquarium pets.