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鱼花经过一段时期的培育,当体长达到2.6—3.3cm时,就称为夏花。由于刚开始鱼花是在高密度下培育的,成为夏花后,随着鱼体长大,活动空间也要求逐渐增大,原池的水质和营养条件亦不能适应鱼体需要。因此,对夏花鱼种需分池饲养和做好出塘准备。否则,不仅生长会变得缓慢,而且会发生鱼病,直接影响到出塘率和成活率。 密养的夏花鱼种,以鱼体长到2.6cm以上时分池饲养最好。分池过早,原来的鱼池水体尚未得到充分利用,鱼苗的鳞片还没有全部长出,鱼体较嫩,起捕时容易粘在网片上,既不便于操作,又容易致鱼苗死亡。分池过迟,则不利鱼苗正常生长,会使鱼苗大小不一。在
Fish after a period of cultivation, when the body length of 2.6-3.3cm, it is called summer flowers. Since the beginning of the fish is cultivated under high density, becoming a summer flower, as the fish grow up, the activity space is also required to gradually increase, the original pool water quality and nutritional conditions can not adapt to the needs of the fish. Therefore, the summer flower species need to pool and make good pond preparation. Otherwise, not only will growth slow down, but also fish diseases will occur, directly affecting the yield rate and survival rate. Cultivated summer flower species, the fish grow to more than 2.6cm hours when the pool feeding the best. Sub-pool too early, the original fish pond water has not been fully utilized, the fry have not yet all the scales, the fish tender, easy to catch when caught on the mesh, neither easy to operate, but also easily lead to fry death. Sub-pool too late, then unfavorable fry normal growth, fry size will vary. in