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南方大口鲶和鲶同属鲶科鱼类,随着大口鲶养殖效益的不断提高,此鱼为广大养殖者所喜爱。但有些养殖者难以区分这两种鱼的鱼苗,为此,现将它们之间的主要区别归纳如下: 1.尾形 大口鲶尾鳍的上叶明显长于下叶,而鲶的尾鳍上下叶对称,即等长,这是重要的区别。 2.须数量 两者的幼鱼早期发育阶段都具3对须,成鱼均为2对,不同的是成鱼的第2对下颌须消失的阶段不同,体长为 10～15cm的幼鱼如存在第2对下颌须,则是大口鲶,否则为鲶。
Southern catfish and catfish belong to the same catfish, with the continuous improvement of catfish breeding efficiency, this fish is loved by the majority of farmers. However, it is difficult for some farmers to distinguish between the fry of these two fish species. Therefore, the main differences between them are summarized as follows: 1. The upper leaves of the caudal fin cats are significantly longer than the lower leaves, while the caudal fin of the catfish is symmetrical Long, this is an important difference. 2. Both juveniles require three pairs of juveniles at early developmental stages and two pairs of adult fish, except that the second pair of adult fish must disappear at different stages of their mandibular growth. Juveniles of 10-15 cm body length If there is the second pair of mandibles, it is a large catfish, catfish otherwise.