Shoulderspot Sandgoby (Gnatholepis anjerensis) オオモンハゼ also Eyebar Sandgoby
The Shoulderspot Sandgoby has a red spot on its shoulder above the pectoral fin even with a small red spot below the eye. It also has a vertical dark bar going through the eye with that red spot on it. Gnatholepis cauerensis is similar with the dark bar through the eye without the red spot and a yellow shoulder spot. It gets to be about 10 cm long.