Differs from Pseudecheneis sulcata in possessing longer pelvic fin, reaching base of first anal fin ray (vs. not reaching); and from Pseudecheneis crassicauda in having longer pectoral fin, reaching origin of pelvic fin (vs. not reaching); from Pseudecheneis serracula in having shorter adipose fin base (length of adipose fin base 125-166.7% in length of anal fin base vs. larger than 200%); and from Pseudecheneis sympelvica in having separate pelvic fins (vs. fused). Can be differentiated from other congeners except Pseudecheneis immaculatus in having longer pectoral fin (28.7-38.1% SL vs. 24.5-35.9), extending to pelvic fin (vs. not extending); and differs from P. immaculatus in having yellow spots or patches on the body (vs. lacking ) (Ref. 74729).

Description: dorsal fin rays ii, 6; ii, 5-6; anal fin rays iii,7; iii, 7-8; pectoral fin rays i12-13; pelvic fin rays i5 (Ref. 74729).