Eviota sp.
Eviota is a Goby. Amami 2025
These are both Eviota sp. I just don’t know which.
Hairfin Pygmy Goby (Eviota prasites) アオイソハゼ
Shimadai’s dwarfgoby (Eviota shimadai) ハナグロイソハゼ
Shoulderspot Eviota (Eviota spilota)
Are the most likely candidates. The more I look the more uncertain I get.
They are Dwarfgobies and very small about 3 cm. Amami
Eviota sp. similar to the others on this page. Maybe (Eviota shimadai). Amami 2025
Eviota sp. similar to the others on this page. Amami 2025