Hypoptychus dybowskii

Hypoptychus dybowskii, the Japanese sandlance, is a species of hypoptychid fish found in shallow salt water off the coasts of Japan and Sakhalin (Russia) as well as possibly occurring in South Korea and China. It is a commercially important species where it occurs. This species grows to a length of 10 centimetres (3.9 in) TL. This species is the only known member of its genus.

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• hypoptychus dybowskii korean sandlance korean sandeel
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Like sticklebacks, it feeds on small invertebrates and fish larvae. Also like sticklebacks, it produces a sticky secretion from its kidneys when breeding. The parent uses the secretion to attach the eggs to sargassum.