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This paper presents the stages of embryonic and postembryonic development in Polyodon spathula (Polyodontidae) under the conditions of the acclimatization area at Fish Culture Research and Development Station Nucet, Dambovita county, Romania. Embryonic development at the paddlefish is carried out in the temperature range of 14-18o C with an optimum of 16o C. For the induction of maturation and ovulation, the Nerestin 5A hormone was used. The size of the eggs is between 2.7-3 mm and light gray to gray-black in colo...