Abstract: From June 2017 to April 2018, Experiment of artificial reproduction embryo development of Beaufortia liui in the Dadu river black horse fish breeding station. The results showed that it was omnivorous fish and benthic like nocturnal. The breeding season was from February to April, the mature eggs were oval, the egg diameter was about 0.8 mm, and the yellowish, slightly sticky. About 8 minutes after fertilization, the egg membrane swelled to the maximum, and the egg diameter was about 1.2 mm. At a water temperature of （17±0.5） ℃ for 60 h 55 min, the accumulated temperature of 974.56 ℃·h. Embryo development was completed in seven stages. After 6 days, the seedlings began to eat. The pectoral and ventral fins of the larvae were completely specialized after 45 d of film emergence, and their body shape was basically the same as that of adult fish.

Key words: Beaufortia liui, artificial reproduction, embryonic development, Dadu river