罗非鱼抗寒能力很低,上世纪80代刚引进到本地时,水温8℃以下,塘里的罗非鱼就大批死亡。后来由于发洪水,罗非鱼从塘里跑到江河湖泊水库里,过惯了野外生活,抗寒能力才逐渐强起来。本世纪以来,较浅的江河里水温降到4℃以下才死亡。 Tilapia cold capacity is very low, 80 generations of last century, just introduced into the local time, the water temperature below 8 ℃, the pond tilapia died in large numbers. Later, due to floods, tilapia ran from the ponds rivers and lakes and reservoirs, used to the wild life, ability to gradually become stronger cold. Since the beginning of this century, the water temperature in the shallower rivers has dropped below 4 ° C.