Diagnosis: Caudal fin emarginate, lobes not filamentous; caudal concavity 6-17% SL; dorsal fin rays 16; 3rd to 10th dorsal fin spines subequal; anal fin pointed, rays 7-8; 2nd to 4th rays elongated; pectoral fins rounded, rays 17-18, pelvic fins angular, reaching just past anus; lateral line scales 43-47; scale rows from 5th dorsal fin spine to lateral line 3 or 4; circumpeduncular scales 26-28; head with small auxiliary scales; proximal half of median fins scaly, but spinous dorsal fin naked.
Diagnosis: Caudal fin emarginate in male, lobe tips bluntly pointed; rear margin slightly concave or slightly forked in female, caudal concavity 7-12% SL; dorsal fin rays 15-17; interspinous membranes slightly incised; no elongated spines; rear end of fin pointed; anal fin rays 6-8; fin of male enlarged and pointed from elongated middle rays; pectoral fins pointed, rays 16-19, middle rays longest reaching vertical at anus; pelvic fins rounded, reaching anus.
Diagnosis: Caudal fin crescentic; 29-36% SL; caudal concavity 12-29% SL; dorsal fin rays 15-17, no elongated spines or rays, but interspinous membranes produced as short filament behind tip of each spine; anal fin rays 7 (one of 15 fish with 6 anal fin rays); pectoral fin pointed, reaching 3rd anal fin spine, rays 17-19; pelvic fin pointed.
Diagnosis: Male caudal fin lunate, with elongated lobes, outer rays filamentous; caudal concavity 19-35% SL; female caudal fin emarginate; dorsal fin rays 15-17, no elongated spines or rays, spinous and soft-rayed parts of equal height; anal fin rays 7-8; pectoral fins obtusely pointed, rays 18-20; pelvic fins pointed with slight elongation of 2nd and 3rd rays, reaching between anus and 3rd anal fin spine.
Dorsal fin rays 16-18; no elongated spines, but adults with rear end of fin pointed by elongation of 8th to 11th rays; longest ray twice length of longest spine.
Diagnosis: audal fin lunate; dorsal fin rays 16, rays longer than spines; anal fin pointed with 7 rays, third ray elongated; pectoral fin rays 17-18, reaching vertical at anus; pectoral and pelvic fins subequal; pelvic fin with 2nd ray slightly enlarged, filamentous, reaches anus.
Diagnosis: Caudal fin convex to truncate, or slightly concave; upper and lowermost rays slightly exserted; dorsal fin rays 16 or 17, third to 10th spines subequal; anal fin pointed in males, rounded in females, rays 7; pectoral fin slightly pointed, reaching vertical at anus, rays 18-20; pelvic fin pointed, 2th ray slightly elongated, reaching anus.
Diagnosis: Caudal fin deeply forked, lobes distinctly longer than head; lobe tips acute; caudal concavity 23-33% SL; dorsal fin rays 16 or 17, fin margin smooth and convex, inter-spinous membranes not incised; dorsal fin origin at vertical from rear edge of preopercle; anal fin rays 7; anal fin margin rounded; pectoral fins bluntly pointed, rays 19-20, middle rays longest, 3.
Diagnosis: Caudal fin asymmetric; dorsal fin rays 16, dorsal spines progressively longer with small cirrus from tip of each interspinous membrane; anal fin rays 7; pectoral fin rays 19-21; pelvic fins elongated with 2nd ray filamentous.
Dorsal fin rays X, 16; third spine pungent, slightly (4% SL) longer than fourth spine; dorsal fin spines 3, 4, and 5 with fleshy cirrus at tip; rear margin of fin pointed and elongate, with 9th to 14th rays elongated, reaching well past caudal fin base; 9th ray of holotype abnormally shortened, 8 mm compared to 27 mm for the 8th and 10th soft rays.