Lizardfish (Saurida (gracilis or nebulosa) マダラエソ or ウチウミマダラエソ
I think that this is a Slender Lizardfish. The Nebulous Lizardfish has pectoral fins that are a slightly shorter. Amami 2018
Same picture as above cropped to the head. Amami 2018
Another Lizardfish. Amami 2025
Another unidentified Lizardfish. I have given up trying to identify these Lizardfish for now. Amami 2025