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增殖放流的功效是显而易见的,首先可以通过增殖放流来补充和恢复鱼类资源。有些鱼种很少甚至没有了,通过增殖放流,人工补充这些鱼种,一则增加鱼种资源,改善种群结构,二则也能够维护鱼类种群的多样性。有些濒危鱼种,我们可以通过增殖放流增加它们的数量,保护这些濒危鱼种。其次,增殖放流可以改善水质和水域的生态环境。放流一些滤食性的鱼类,如鲢鳙鱼,它们可以滤食水中的藻类和浮游生物来净化和改善水质。
The efficacy of multiplication and discharge is obvious. First, fish stocks can be replenished and recovered through multiplication and release. Some species have little or no fish, and they are replenished by multiplication, artificially replenishing these species, one by increasing stocks and improving population structure, and the other by maintaining the diversity of fish stocks. For some endangered fish species, we can increase their numbers by multiplying and releasing them to protect these threatened species. Second, multiplication and discharge can improve the ecological quality of water and water. A few filter-feeders such as silver carp and bighead carp are released to filter algae and plankton in water to purify and improve water quality.