The Face of Japanese Dace 1

Tribolodon nakamurai

It's jaw is obviously underbite

Immature Japanese dace species belonging to genus Triborodon are difficult to be distinguished from each other.But only Triborodon nakamurai can be detected from other species. It has obviously underbite jaw.

Tribolodon hakonensis and T.ezoe

These two species are uneasy to be distinguished

Incidentally, these two species can be detected by the shape of their anal fin. But very difficult.