Environmental imitation of microwater flow under natural conditions and the possibility of keeping constant temperature and cleanliness of nutrient solutionIn vitro hatching apparatus of fertilized eggs of aquatic animals to improve the rate of incubation of fertilized eggs in fertilized eggs. Hatching box, nutrient solution disinfectant, and nutrient solution in hatchery during hatchingFertilization means, temperature control device for controlling temperature of nutrient solution in hatchet, fertilizationIncludes a filter means for separating the egg and nutrient solution. The filtering means is a ripple shaped first sliding groove andIt comprises a bifurcation groove and a filter network provided in the first sliding groove and the second sliding groove. The circulation meansThe height is higher than the lowermost position of the filtration network and has an overflow port below the top of the filter.Diagram 自然条件における微小水流の環境模倣、及び栄養液の定温と清潔維持を可能とさせることにより、水産動物受精卵の体外孵化の存活率を向上する水産動物受精卵の体外孵化装置を提供する。孵化箱と、栄養液消毒装置と、孵化過程で孵化箱内の栄養液を循環させるための循環手段と、孵化箱内における栄養液の温度を制御するための温度制御装置と、受精卵と栄養液を分離させるための濾過手段とを含む。濾過手段は波紋状の第一摺動溝及び第二摺動溝と、第一摺動溝及び第二摺動溝に設けられる濾過網とを備える。前記循環手段は高さが濾過網の最下位置より高く、濾過網の最上位置より低い溢流口を有する。【選択図】図１
