Hyphessobrycon eques is a famous fish for ornamental fish market and aquarium. They are inhabit in regions of Amazon and Paraguay River basin. Serpae fishs were investigated 2–3 males are chased to female, and then males attempted to simulate the females abdomen. After fertilization, eggs were kept in incubators at 28oC. The fertilized eggs had adhesive and demesal characteristics and had a mean diameter of 0.92 ± 0.01 mm. Larvae hatched at 16 hrs post fertilization. The hatched larvae averaged 2.90 ± 0.16 mm in total length (LT). Complete yolk sac resorption and mouth opening occurred on the third day post hatching. At 45 days post hatching, the larvae were 12.5 ± 1.60 mm LT and had reached the juvenile stage.

• Jae-Min Park(Dept. of Aqualife Science, Chonnam National Universitystage)
• Na-Ri Kim(Dept. of Aqualife Science, Chonnam National Universitystage)
• Kyeong-Ho Han3(Dept. of Aqualife Science, Chonnam National Universitystage)
• Ji-Hyeong Han(Dept. of Aqualife Science, Chonnam National Universitystage)
• Maeng-Hyun Son(Southwest Sea Fisheries Research Institute, National Fisheries Research and Development Institute, Aquaculture Industry Division, NFRDI)
• Jae-Kwon Cho(Southwest Sea Fisheries Research Institute, National Fisheries Research and Development Institute, Aquaculture Industry Division, NFRDI) Corresponding Author