The family Acanthuridae is a key component of coral reef ecosystems as it controls macroalgae biomass buildup. During routine monitoring of benthic communities in the Mexican Caribbean, we observed unusual behaviour of a group of Acanthurus chirurgus, which were feeding on a tuna head left on site by travel tour personnel. This phenomenon has been documented in other herbivorous fish species, especially in places where tourism is a major coastal activity. Although many Acanthurus seek additional sources of protein by feeding on detritus, it is unusual for them to feed directly on fish flesh. Acanthurus chirurgus will incorporate proteins from animal tissues whenever the opportunity arises. Such opportunities occurred rarely in the past, but have become more frequent recently, related to increasing tourism activities where flesh is used as bait to attract the surrounding fauna.

中文翻译：

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Acanthurus chirurgus（Bloch，1787年）（棘形目：Acanthuridae）的兼性清除摄食习性。

棘足科是珊瑚礁生态系统的关键组成部分，因为它控制着大型藻类生物量的积累。在对墨西哥加勒比海底栖动物群落进行例行监测期间，我们观察到一群棘齿棘叶猴的异常行为，它们以旅行人员留在现场的金枪鱼头为食。在其他草食性鱼类中，特别是在旅游业是主要的沿海活动的地方，也记录了这种现象。尽管许多棘叶by通过以碎屑为食寻求其他蛋白质来源，但它们直接以鱼肉为食是不寻常的。每当机会出现时，Acanthurus chirurgus就会整合动物组织中的蛋白质。这样的机会过去很少发生，但是最近变得越来越频繁，