If lionfish are preying on parrot fish, those parrot fish are no longer keeping the reefs clean and a lot of times the algae can overtake the reef and cause a bunch of coral death.

如果狮子鱼捕食鹦鹉鱼，那么这些鹦鹉鱼就无法再保持珊瑚礁的清洁，而且很多时候，藻类数量会超过珊瑚礁，从而导致大量珊瑚死亡。

If you put them something into the ecosystem that's not supposed to be there and they're eating the same food as some of your native species, there's competition there or there's grazers, like your parrot fish.

如果你把一些本不应该存在的生物放进生态系统，并且它们吃的食物和一些当地物种一样，那么那里就会产生竞争，或者，那里有食草动物，比如鹦鹉鱼。