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淡水白鲳为热带、亚热带鱼类,水温低于是12℃时,会自然死亡;水温在18-19℃时,鱼可以存活,但易生病,导致大批量死亡。因此,淡水白鲳的越冬管理工作显得尤为重要。1 选择适宜的越冬方法 根据越冬条件和生产需要,淡水白鲳的越冬分为两种类型。一种是低温保种型,即越冬池水温维持在18℃~23℃,这种水温能使白鲳维持生命,不至于死伤,因此,只能保种,不能生长。另一种类型是适温培育型,即使越冬池水温保持在
Freshwater pomfret is tropical and subtropical fish, which naturally dies when the water temperature is lower than 12 ° C. Fish survive at 18-19 ° C, but are susceptible to illness and lead to mass deaths. Therefore, the freshwater pomfret winter management is particularly important. 1 Select the appropriate method of winter According to the winter conditions and production needs, wintering freshwater whitefly is divided into two types. One is the low temperature preservation type, that is, the winter pool water temperature is maintained at 18 ℃ ~ 23 ℃, this water temperature can make the whitefly to maintain life, not to death and wound, therefore, can only maintain seedling, can not grow. Another type is suitable temperature incubation type, even though the winter pool water temperature is maintained at