crustacean GRE

These crustaceans provide a valuable food source for some fish.

这些甲纲物是某些鱼类重要食物来源。

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

水蚤不是昆虫类而是桡脚类物，像龙虾或螃蟹那样有甲，是非常小。

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

孤立性质，硬鳞鱼殴打海水来自嘴里去揭露猎物，如软体物，甲类，蠕虫和海绵物。