crustacean GRE

These crustaceans provide a valuable food source for some fish.

这些壳纲物某些鱼类重要的食物来源。

Solitary in nature, the trunkfish blows water out of its mouth to expose prey such as mollusks, crustaceans, worms, and sponges.

孤立的性质，硬鳞鱼殴打海水来自嘴里去揭露猎物，如软体物，壳类，蠕虫和海绵物。

" Water flees fleas" are not insects but copepods, a crustation crustacean like lubster lobsters and crubs crabs but extremely small.

水昆虫类而桡脚类的物，像或螃蟹那样有壳的，但非常小的。