is an economically important, cold, freshwater species in China. The species is cultured because of its taste and high protein value. Knowledge of the ontogeny of the alimentary canal and accessory glands is essential for understanding the nutritional physiology of larvae and juveniles. larvae reared under culture conditions based on histological observation. The larvae were held in one of three 0.3 m³circular tanks (12–16.2)for 185 d and fed an artificial diet. Based on the structural changes in the digestive system, we identified three distinct stages during embryonic development: (1) 0–552embryo initiated the intestinal phase of development, the original base cells of the digestive tract were localized below the chordoma, in a single layer of flat cells. During the second stage, the original base cells ofinner layer cells of the digestive tube proliferate, and the outer layer forms as two layers of cells. At the end of the embryonic period, the hatched larvae have an oil-rich yolk sac, a simple digestive system that resembles a blind tube, and lack of external connection in the anus. Between 2–7 days after hatch (DAH), the digestive system begins to rapidly differentiate but larvae remain entirely dependent on endogenous nutrition from the yolk sac. At the digestive tract was fully differentiated into the buccopharynx, esophagus, non-glandular and glandular stomach, and anterior and posterior intestine. By 14 DAH, larvae were transitioning from being dependent on endogenous nutrition to being exotrophic. The yolk sac was completely absorbed. At 49 DAH, the pyloric caeca was completely differentiated, and the liver and pancreas were functional. Between 64–105 DAH, the oropharyngeal cavity and stomach developed to the adult form with 36 pyloric caeca finger branches. The optimization of formulated feeding during larval culture of 14 DAH. Feeding during this period could be