Abstract
A population of Odontobutis obscura from Goje Island, Korea, was compared genetically with Japanese populations, utilizing 18 allozyme markers. The former was closest (D = 0.184±0.003) to the East Seto group, one of the four geographic groups of Japanese O. obscura, being included in the cluster of East and West Seto groups. Its divergence is likely to have occurred concurrently with the divergence of the two latter groups or their divergence together with the West Kyushu group.
