Leucopsarion petersii is a species of fish in the goby family, Gobiidae, and the only member of the monotypic genus Leucopsarion. It is native to the northwestern Pacific Ocean, where it occurs in China, Japan, and Korea. Its English language common name is ice goby, and in Japanese it is known as shiro-uo. In Japan, where it is a delicacy, it is also called shirauo no odorigui ("dancing icefish"). The ice goby is a valued food fish in South Korea and Japan, where it commands high prices. It is usually eaten raw, and often alive.