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为了获得抗性强、生长快的长吻(鱼危)新的种质资源,四川省农科院水产研究所与四川大学生物系合作,进行了导入外源基因培育长吻(鱼危)良种研究,在长吻(鱼危)(Leiocassis longirostris)的人工授精卵出现胚胎之后,注射1～2μl 的外源胡子鲶(Clars cecuther)DNA 于长吻(鱼危)胚盘与卵黄中间的缝隙处,使胡子鲶 DNA 转移到长吻(鱼危)胚胎中,同时创造良好的环境条件使其继续发育孵化出鱼苗。1991年获长吻(鱼危)转基因鱼400余尾。经过1991～1992年的培育表现情况良好,初见成效。
In order to obtain new germplasm resources with strong resistance and fast growth, the Institute of Aquatic Products of Sichuan Academy of Agricultural Sciences cooperated with the Department of Biology of Sichuan University to carry out the introduction of foreign genes to grow long-bred (fish-dangerous) elite Study showed that 1 to 2 μl of Clars cecuther DNA was injected into the gap between the embryo disk and the middle of egg yolk after the emergence of artificial insemination eggs in the long-necked (Leiocassis longirostris) , So that the catfish DNA will be transferred to the long-legged (fish-borne) embryo while creating good environmental conditions for its continued development to hatch the fry. In 1991 was long kiss (fish dangerous) more than 400 transgenic fish. After 1991 ~ 1992 nurturing performance is good, initial success.