Helcogramma ishigakiensis ベニモンヘビギンポ (size 5cm)
A female Helcogramma ishigakiensis in Katoku Bay. The mating males have a black head and are darker. I at least think that this is a Helcogramma ishigakiensis. There is not that much information about it. I could not find an English name ベニモンヘビギンポ (benimonhebiginpo) translates as Red snake blenny. It is a triplefin blenny. Amami 2025