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Spawning Behavior, Egg Development, Larvae and Juvenile Morphology of Hyphessobrycon eques (Pisces: Characidae) Characidae Fishes

  • Park, Jae-Min (Dept. of Aqualife Science, Chonnam National University) ;
  • Kim, Na-Ri (Dept. of Aqualife Science, Chonnam National University) ;
  • Han, Kyeong-Ho (Dept. of Aqualife Science, Chonnam National University) ;
  • Han, Ji-Hyeong (Dept. of Aqualife Science, Chonnam National University) ;
  • Son, Maeng-Hyun (Southwest Sea Fisheries Research Institute, National Fisheries Research and Development Institute, Aquaculture Industry Division, NFRDI) ;
  • Cho, Jae-Kwon (Southwest Sea Fisheries Research Institute, National Fisheries Research and Development Institute, Aquaculture Industry Division, NFRDI)
  • Received : 2014.10.29
  • Accepted : 2014.11.20
  • Published : 2014.12.31

Abstract

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 $28^{\circ}C$. The fertilized eggs had adhesive and demesal characteristics and had a mean diameter of $0.92{\pm}0.01mm$. Larvae hatched at 16 hrs post fertilization. The hatched larvae averaged $2.90{\pm}0.16mm$ in total length ($L_T$). Complete yolk sac resorption and mouth opening occurred on the third day post hatching. At 45 days post hatching, the larvae were $12.5{\pm}1.60mm$ $L_T$ and had reached the juvenile stage.

Keywords

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