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海洋是生命的摇篮,据估计在这波涛起伏的海面下生活着约16万种生物,在这庞大的生物资源中,鱼类要算最重要的了。海洋中的鱼类,不仅种类多,数量也很大。从种类上来说有几万种,其中作为重要捕捞对象的有带鱼、鲭鱼、鳀鱼、红鱼、鲳鱼、鳗鱼,黄鱼、沙丁鱼等。近些年来,鱼的数量在显著地减少,单以黄鱼说,其捕获量仅及20年前的十分之一。鱼类数量的显著减少是由于狂捞滥捕、只捕不养和海水污染等人为因素造成的。因此,海洋牧鱼,也即让美味的鱼类就像陆地上的家畜一样在一定场合,人为采取一定措施,并给予有利的生活条件,从而进行大规模的工业化生产,就成为人们所迫切关注的话题。
The ocean is the cradle of life. It is estimated that about 160,000 species of living creatures live under the steep sea. In this vast biological resource, fish are the most important. There are not only many species of fish in the oceans but also large numbers. There are tens of thousands of species from the species, of which as a major fishing targets are octopus, mackerel, mackerel, red fish, mackerel, eel, yellow croaker, sardines and so on. In recent years, the number of fish has been significantly reduced, with fish caught alone being as much as one tenth of that 20 years ago. The significant reduction in the number of fish is due to human factors such as overfishing, catching fish and seawater pollution. Therefore, it is urgent for people to pay attention to the fact that the marine fish, that is, the delicious fish, like the domestic animals on land, take certain measures artificially and provide favorable living conditions for large-scale industrial production on certain occasions topic of.