2010—2013年，对神农架林区玉泉河、长坊河的齐口裂腹鱼（ Schizothorax prenanti）的生物学进行了调查，并对其人工繁殖技术进行了多次尝试。对166尾野生齐口裂腹鱼样本的生物学研究表明：神农架齐口裂腹鱼在自然环境中生长缓慢；雌雄性比为1．79∶1；卵径在2．05～3．13 mm之间，平均值为（2．68±0．448） mm；Ⅳ期卵巢成熟系数4．90％～19．44％，平均（11．12±5．07）％；绝对繁殖力在1316～11070粒之间，平均（4259±2886）粒，相对繁殖力为（12．83±5．67）粒／g。流水池塘培育齐口裂腹鱼，运用雌鱼尾柄粗糙程度判断雌鱼成熟度，选择成熟度好的雌雄亲鱼，用LHRH－A2和鲤脑垂体人工催产，有效催产剂量为LHRH－A2（30～40）μg／kg ＋鲤鱼脑垂体（2．5～3．0） mg／kg；单用LHRH－A2为60μg／kg。适时人工授精，受精卵在孵化箱内孵化。2010～2013年，共计催产18批次，结果为：催产率89．12％，受精率90．11％，孵化率88．32％。%From 2010 to 2013 , the biology of Schizothorax prenanti in Yuquan River and Changfang River of Shennongjia was surveyed , and its artificial breeding was tried for several times . Biological ystudyon 166 specimens of the wild S.prenanti suggests that Schizothorax prenanti in Shennongjia grow slowly in natural evironment; the sex ratio of female to male is 1.79∶1; the diameter of its eggs was between 2.05 mm to 3.13 mm with anaverage of ( 2.68 ±0.448 ) mm; the GSI ( gonadosomatic index ) of stage IV female fish was from 4.90% to 19.44% with an average of ( 11.12 ±5.07 )%;the absolute fecundity of individual female was 1316 to 11070 in number, with an average of (4 259 ±2 886) and the rela-tive fecundity of individual was (12.83 ±5.67 ) egg/g.S.prenati were cultured in flowing water , and the sexually mature female fish were chosen by judging the roughness of fish tail .The S.prenati couples of high maturity were induced to spawn by injection of luteinizing hormone-releasing hormone A 2 ( LHRH-A2 ) and carp pituitary extraction .Effective oxytocin dose of luteinizing hormone-releasing hormone (LHRH-A2) was (30~40) μg/kg and carp pituitary was (2.5~3) mg/kg. And when only LHRH-A2 was used, the effective dose was 60μg/kg.In artificial culture conditions the embryos were ob-tained by artificial insemination and were hatched in incubator .From 2010 to 2013 , a total of 18 batches were tried , and the spawning rate was 89.12%, fertilization rate was 90.11%and hatching rate was 88.32%.
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