parent Kaluga were captured from the Amur River and mated. We documented development between the (12.08 ± 0.68) mm(129.21 ± 7.69) mm]. The development was divided into two phases, the prelarval stage between hatching and first feeding(09 dah), and the postlarval stage between the initiation of external feeding and completion of anterior to the anus The morphological development and differentiation were more rapid in prelarvae than in postlarvae. During the prelarval stage, a range of swimming, respiratory, sensory, and feeding organs presumably enables prelarvae to forageFurther differentiation and development of bone plates, further development of fins, and appearance and development of the swim bladder changes occurring during this latter stage likely lead to further improvements in the ability of fish to forage and avoid predators