Abstract:This study determined the embryonic and post-embryonic development of the fish [(Day)]. The morphological and ecological traits in each development phase were described in detailusing a microscope fitted with a digital camera. The fertilized eggs of (Day)are viscous and ovoid, with a diameter of (0.60SE). Embryonic development lasted 65 h and 34 minwhen incubated at a water temperature of (20.0±and was categorized into seven physiological stages.Post-embryonic development was divided into a larval, a juvenile, and a growth stage based on morphological variationin the yolk sac, gas bladder, scales, body color, and barbels. Newly-hatched larvae reached an average length of(2.0, the yolk sac was completely absorbed 7 days after fertilization.After 16 ds maintained temperature, the gas bladder drum at the rear edge of the gill cover had grown to a visiblesize, the body color had deepened, and the red pigment of the heart was discernible, indicating that had moved from the larval to the juvenile life stage. During the juvenile stage, individualsreached an average length of (8.0SE). Juveniles developed sequentially, growing scales, completingdevelopment of the peritoneum, and metamorphosing into young fish at 30 d. Young fish reached an average length of(13.0±