池塘套养乌鳢须注意四点１、套养的乌鳢鱼苗，规格要比其它鱼类小．春投鱼苗，一般鱼类规格要在１７ｃｍ以上，而乌鳢只能在５—７ｃｍ左右，大了容易伤害其它鱼苗，过小则觅食能力差，容易死亡。２、投苗时间稍推迟。因为乌鳢生长速度要比草鱼慢，与鲢、鳙、鲤差不多，比... Pond nurseries should pay attention to four points 1, nourishment catfish fry, specifications than other small fish. Spring fish fry, the general size of fish to be more than 17cm, and only about 5-7cm black tallow, big easy to hurt other fry, too small is poor feeding ability, easy to die. 2, vote time slightly delayed. Because of the growth rate of black jackfruit slower than grass carp, and silver carp, raccoon, carp almost ...