Frostfin Cardinalfish (Ostorhinchus ishigakiensis) ミヤコイシモチ – size 5cm
The Frostfin Cardinalfish is yellow brown. Black membrane between spines at the tip of the spinous dorsal fin, followed by a white margin. Amami 2023
From the top of the Frostfin Cardinalfish you can see the white spots and their locations on the dorsal side. This fish seems to be also called Ostorhinchus hoevenii. Ostorhinchus ishigakiensis was created in 2017 as Apogon ishigakiensis. I have not found any discriptions of how Ostorhinchus ishigakiensis differs from Ostorhinchus hoevenii. Amami 2025
A young Frostfin Cardinalfish. Amami 2025