Well, the little clownfish can chase away butterfly fish that would eat the anemone, and they can also clean the anemone of parasites and bits of food that the anemone has no way of cleaning itself.

小丑鱼会赶走那些食用海葵的蝴蝶鱼，也可以清理海葵的寄生虫和食物残渣，因为海葵没办法清理自己。