目前,淡水养殖的鱼类品种约有60余种。选择适宜的养殖品种,可充分利用自然资源,提高养殖效益。据生产实践,一般旱草较多或有种草面积者可多养草食性鱼类,如草鱼、鳊鱼等;肥料充足者可多养鲢鱼、鳙鱼、鲤鱼、鲫鱼等;温度较高的地区可多养罗非鱼等。 At present, there are about 60 species of freshwater cultured fish. Select the appropriate breeding species, can make full use of natural resources, improve farming efficiency. According to the production practice, generally more dry grass or grassy area can be raised more grass-fed fish, such as grass carp, bighead carp, etc .; adequate fertilizer can raise silver carp, bighead carp, carp, crucian carp; The area can be more tilapia and so on.