淡水鱼作为内陆居民的重要蛋白源或作为一种观赏鱼,很早以前就开始了养殖。据记录,中国在2,400年前就开始养殖鲤鱼,1,700年前开始养殖金鱼。有关这些鱼在池塘里产卵、孵化的技术(苗种生产技术),很早以前就有了。且早就开始在不同种间或不同品种间生产杂交种。杂交的方法鲤鱼是被驯化了的鱼。如若将雌雄亲本放在预先准备好的产卵池内,是很容易产卵的。在此种类中进行同一种内不同品种或不同品系间的杂交是较容易的。但是,野生的鱼在人为的环境下是很难产卵的,因此,一般是采用注射激素,或调节水温等方法诱导 Freshwater fish, as an important protein source for inland residents or as an ornamental fish, began breeding far earlier. According to records, China started carp breeding 2,400 years ago, 1,700 years ago began to breed goldfish. The technique of spawning and hatching fish in ponds (seed production technology) has long been known. And long ago began to produce hybrids between different species or different varieties. Method of crossbreeding Carp is a domesticated fish. If the male and female parents on the pre-prepared spawning pool, it is easy to lay eggs. In this category it is easier to cross between different breeds or within different breeds within the same breed. However, the wild fish in the artificial environment is very difficult to spawn, therefore, is generally used injection of hormones, or adjust the water temperature and other methods of induction