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以往罗非鱼的养殖(特别在生产单位),都是单一品种或是几个品种的混养。品种混杂,群体中雌鱼较多,在成鱼养殖过程中往往会繁殖出大量的小罗非鱼,这不仅影响了成鱼的商品规格,使经济效益下降,而且造成池塘条件恶化,为了解决上述问题,水产工作者在七、八十年代用激素诱导,不同品种的罗非鱼进行杂交等办法,使罗非鱼雄性化.这在一定程度上解决了罗非鱼成鱼养殖过程中大量繁殖出罗非鱼苗种的问题。
Past tilapia farming (especially in the production unit), are a single variety or a few varieties of polyculture. Mixed species, more females in the group, in the process of adult fish breeding often a large number of small tilapia breeding, which not only affects adult fish product specifications, so that economic benefits decline, but also to deteriorate the pond conditions, in order to solve The above problems, aquaculture workers in the seventies and eighties with hormone-induced, different varieties of hybrid tilapia and other ways to male tilapia.This to a certain extent, solve the tilapia adult fish breeding process Breeding of tilapia seed problems.