Invertebrata
无脊椎动物分类学 [无脊椎] Invertebrate Systematics
小鱼和无脊椎动物也以这些植物类生物为食，然后则是众所周知的小鱼吃虾米，大鱼吃小鱼。
Small fish and invertebrates also graze on the plant-like organisms, and then those smaller animals are eaten by bigger ones.
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