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罗非鱼养殖的最大优点,是苗种生产和养殖技术比较简单。但由于它具有口腔含卵孵化幼鱼的习性,影响了雌鱼的生长。一般雌鱼在6个月,体重在200克左右就开始产卵,它没有固定的产卵季节,只要达到适宜的温度,平均一个月就可产一次卵。产完卵后即将卵含到口中孵化,受精卵在口腔中孵化约2周,在这期间的亲鱼由于含卵而绝食,放出幼鱼后开始摄饵,等恢复了体质又要产卵了,这样就影响了雌鱼达到商品鱼的规格。为了克服这个缺点,近年来研究了罗
The biggest advantage of tilapia farming is that seed production and culture techniques are relatively simple. However, due to its habit of oval hatching juveniles, affecting the growth of females. The average female at 6 months, weighing about 200 grams began to lay eggs, it does not have a fixed spawning season, as long as the appropriate temperature, an average of one month can produce eggs. After the egg is produced, the eggs are hatched in the mouth, and the fertilized eggs hatch in the mouth for about 2 weeks. During this period, the broodstock hunger due to ova and release the juveniles and begin to take bait, This affects the females reach the commodity fish specifications. In order to overcome this shortcoming, Luo studied in recent years