提起食物链,也许不少人对它比较陌生,但我们通常所说的“大鱼吃小鱼,小鱼吃虾子,虾子吃泥巴”,则是对食物链最简单、明了的解释。科学的说法是,生物群落中各种动植物由于摄食关系而形成的联系,即各种动植物按营养级给予顺序排列,这就是食物链。就水域而言,其食物链的第一环节为能够合成有机质的藻类、水生高等植物及一部分细菌,第二环节是草食性和滤食性动物,第二环节以后.或者是到最后环节,才是直接供人类利用的鱼类和其它经济动 Fetch the food chain, perhaps many people are unfamiliar with it, but what we usually call “big fish eat small fish, eat shrimp fish, shrimp eat mud” is the simplest and clearest explanation of the food chain. The scientific argument is that the relationship between various plants and animals in the biome due to ingestion relationship, that is, various plants and animals are arranged in order of trophic level, which is the food chain. In the case of waters, the first link in the food chain is the synthesis of organic algae, aquatic plants and some bacteria, the second is herbivore and filter feeders, the second link, or the last link, is direct Fish for human use and other economic activities