Clownfish have a kind of mucus on their body, which can resist the poison of anemones.

Anemone blocks the attack of large fish or natural enemies for clown fish, and provides it with a place to live, spawn and reproduce; At the same time, the leftover food of anemones can also be provided to clown fish.

Clown fish can drive away fish that eat anemones, such as flounder, attract other fish to eat anemones, and help anemones remove necrotic tissues and parasites.