由特里弗斯讨论过的清洁工鱼（cleaner fish）的奇怪的共生现象最为典型。已知有五十个物种，其中包括小鱼和小虾，靠为其他物种的大鱼清除身上的寄生虫来维持生活。
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为了方便那些清洁工，我们观察到鲨鱼们以站立的姿势游动，作出像芭蕾舞一样的旋转，让这些清洁鱼能够触及任何角落和缝隙。
To facilitate the cleaners, the sharks were seen swimming in a standing position, doing ballet-like twirls so that the fish washers could get at every nook and cranny.
在那里，饥饿而喜欢吃小东西的清洁工濑鱼会将鲨鱼的死皮、外部寄生虫以及其他讨厌的东西去除。
There, hungry and detail-driven cleaner wrasse fish rid sharks of dead skin, external parasites and other undesirables.
清洁工濑鱼，被认为是暗礁的真空吸尘器，吸入少量的食物，寄生虫，和从暗礁鱼的死皮。
Cleaner wrasses, known as the reef's vacuum cleaners, suck morsels of food, parasites, and dead skin from reef fish.
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