herbivorious fish such as rabbitfish feed on algae which compete with corals for space and predatory fish like wrasse help to control the number of sea urchins which can erode the corals 素食性魚(yú)類(lèi)如泥猛會(huì)攝食一些與珊瑚兢爭(zhēng)空間的藻類(lèi),而獵食性魚(yú)類(lèi)如鸚鵡魚(yú)則能控制會(huì)破壞珊瑚的海膽。