4.孵化阶段此阶段的管理包含两方面的内容:一是照料受精卵和小鱼苗,另一方面还要照料亲鱼。(1)初产卵可以加铁丝罩网保护后由其在产卵缸内孵化,由于受精率肯定不高,不必太多的照料。到亲鱼产第3批卵时,一般受精率已经比较高了,孵化要认真对待。有两种孵化方式可供选择:一种是上 4. Incubation stage The management of this stage includes two aspects: First, take care of fertilized eggs and fish fry, on the other hand, they also take care of broodstock. (1) The primipara can be hatched in the spawning cylinder after being protected by a wire mesh cover. Since the fertilization rate is certainly not high, it is not necessary to take care of too much. To broodstock to produce the third batch of eggs, the general fertilization rate is already relatively high, hatch should be taken seriously. There are two ways to incubate: one is on