The hybridizations between Ancherythroculter nigrocauda （♂）and Culter alburnus （♀）were carried out in July，2010，and the embryonic and postembryonic development of the hybrid were observed and described.The results showed that:the fertilized eggs had a light yellow surface,a sphere-like form and a diameter of 0.86-0.95 mm.The progress of embryonic development is composed of 7 stages:one cell stage,cleavage stage,blastula stage,neumla stage,gastrula stage,apparatus-forming stage and Hatching-out stage，and each of them can be divided further into 29 periods.At water temperature of 24-25 ℃,the first cleavage occurred at 40 min after fertilization(af); most of larvae hatched out at 26 h af,when the total length of the new-hatched larvae ranged from 4.50 to 5.05 mm and the accumulative temperature reached 647.7 ℃·h.Postembryonic development of hybrid is consisted of larvae phase and juvenile phase.The larvae developed into juveniles at 288 h after hatching with ventral fin differentiated.Juvenile phase sustained 240 h during which scales emerged and covered the fish surface.The new-hatched larvae can not swim until a one-chambered gas bladder appeared at 104 h after hatching,meanwhile larvae began to feed exogenously.