The egg development and early life history of Korean spotted sleeper, Odontobutis interrupta which is Korean endemic species from Sora-choen was investigated. The Korean spotted sleeper were caught at Sora-myeon, Yeosu-si, Jeollanamdo, from Korea at May in 2014. The fertilized eggs were 4.23 ± 0.05 mm in long diameter and had oil globules. Hatching time of the embryo began about 442 hr 14 min after fertilization under water temperature of 19.5oC. The newly hatched larvae were 4.27 ± 0.35 mm in total length and their anus were not yet opened. 3 days after hatching postlarvae was measured 6.20 ± 0.11 mm in total length. 10 days after hatching postlarvae was measured 6.69 ± 0.14 mm in total length.

• Ji-Hyeong Han(Dept. of Aqualife Science, Chonnam National University) Corresponding Author
• Seong-Min Yun(3Gyeongsangbuk-Do Research Center for Freshwater Fishes)
• Dong-Jae Yoo(Gyeongsangbuk-Do Fisheries Resources Development Institute)
• Na-ri Kim(Dept. of Aqualife Science, Chonnam National University)
• Kyeong-Ho Han(Dept. of Aqualife Science, Chonnam National University)
• Jae-Min Park(Dept. of Aqualife Science, Chonnam National University)