Luciogobius ryukyuensis Chen, Suzuki & Senou 2008

This species is distinguished from all its congeners by the following set of characters: D1 absent; D2 I/11; A I/11; pectoral fin rays modally 16 and with one upper, very short free soft ray; vertebral count 16 + 21 = 37; head and body with many rounded light creamy white spots above creamy yellow background (Ref. 86740).

Dorsal spines (total): 1; Dorsal soft rays (total): 11; Analspines: 1; Analsoft rays: 11; Vertebrae: 37

Found among gravels at the rapids which are in the most lower reaches in the freshwater area on the river (Ref. 86740).