Description: General body shape and appearance illustrated in Figs. 2–3. Head small, short (head length
24.9–31.2 %SL), eyes large (orbital diameter 22.8–29.7 %SL); adult males with convex hump at posterior of head,
immediately behind eye; body slender (body depth 21.6–31.4 %SL); opercles parallel when head viewed dorsally;
dorsal fin positioned after mid-body (predorsal length 59.1–68.2 %SL); caudal fin posterior margin rounded to
medially pointed; dorsal fin distal margin rounded; pelvic fins falcate; anal fin pointed. Meristic and morphometric
data are summarized in Tables 1 and 2. Maximum size: 43.7 mm SL (THNHM-F-01623)