翘嘴红鲌苗种繁育及成鱼养殖试验

2004～2005年进行了翘嘴红鲌人工繁殖、夏花与冬片鱼种培育、成鱼池塘与网箱养殖试验,取得较好效果。2004年：催产亲鱼25组,出苗340万尾；3口发花池经25天饲养共产夏花鱼种24.91万尾,平均体长3.0～3.3 cm；3口育种池经140天培育共产冬片鱼种6.38万尾,平均体长12.4～14.3 cm,利润2660～2937元/667m~2,投产比1：2.64～2.82。2005年：3口成鱼池共产商品鱼7445 kg,平均单产413.6 kg/667m~2,利润4546～6333元/667m~2,投产比1：2.15～2.53；4口网箱共产商品鱼2558kg,平均单产32.0 kg/m~2,利润352～413元/m~2,投产比1：2.01～1：2.03。

Experiment on the Seed Rearing and Commercial Fish Cultivation of Erythroculter ilishaeformis

During 2004 and 2005 the experiments including artificial propagation,seed rearing,pond and net-cage cultivation were carried out.3.40 million fry were obtained from 25 couples of brood fish,249.1 thousand fingerling whose body-length was between 3.0 and 3.3 cm were harvested 25 days after and 63.8 thousand large-size juvenile with body-length between 12.4 and 14.3 cm were harvested 140 days more after- wards,the profit was between 2 660 and 2.937 yuan every 667 m~2,the unit yield of the pond and net-cage was 413.6 kg per 667 m~2 and 32.0 kg per m~2 respec- tively,the ratio of input and output was above 2.0.