Certonardoa
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Certonardoa semiregularis is a species of sea star in the family Ophidiasteridae. It is the only species in the genus Certonardoa.
Description
This species has five, slender, tapering arms. There are regular, longitudinal and transverse rows on the dorsal side. The ventral side is paler than the dorsal side.
Distribution
This species is found in the East China Sea, in Japan, in particular, Honshu Island, Kyushu.