The flying fish (Cypselurus agoo Temminek et Schlegel) is one of the important species of fish in costal water of Huanghai. In the present report the morphological characteristics of the development and the breeding condition of the fertilized eggs and the larvae has been described summarily.The flying fishs lay eggs from near the emd of May through July in coastal area of Kongdong Dao, Yantai. The fertilized eggs were obatained from artificial fertilization on board. The incubation of eggs. and the breedin...