Description: Body shallow and oval (Ref. 126312). Head long, narrow, and with a straight to very gently convex dorsal outline; eye and interorbital area average in width; cheek and lacrimal average in depth (Ref. 126312). Snout average in length, narrow, acute, and slopes gently at 35-45°; premaxillary pedicel long and strongly prominent; jaws isognathous to weakly prognathous, long, slim, very narrow, and rounded in dorsal view; gape large and slopes gently at 15-30°; maxilla (almost) extends to vertical through anterior point of pupil; lower jaw shallow and with a straight ventral outline in lateral view, mental prominence absent, and lower jaw side nearly flat with an inclination of 20-30° to horizontal in anterior view; upper jaw weakly expanded anteriorly; lips and oral mucosa thin (Ref. 126312). Neurocranium shallow, ethmo-vomerine block decurved, preorbital region very shallow, 19-21% of neurocranium length, orbital region shallow, 28-31% of neurocranium length, and supraoccipital crest shallow end wedge-shaped (Ref. 126312). Outer oral teeth numerous, unicuspid, and small; necks slender, cylindrical to conical, and weakly recurved; crowns recurved and acutely pointed; dental arcades rounded; outer teeth closely and regularly set with neck-distances of 1/2 neck-width; in upper jaw, 1-3 posteriormost teeth enlarged; inner teeth small, strongly recurved, unicuspid, and acutely pointed; tooth bands very slender crescent-shaped with 1-2 rows of inner teeth, and narrow posteriorly until only outer row remains past 2/3 lenghts of tooth bands; inner teeth closely and regularly set on 1/2-1 neck-width from outer row in lower jaw, on 1-2 neck-widths from outer row in upper jaw; implantation recumbent; size uniform throughout tooth band (Ref. 126312). Lower pharyngeal bone average in length, narrow, slim, and shallow with a slightly deeper keel; pharyngeal teeth relatively large and slender; major cusps acutely pointed; cusp gaps straight; minor cusps and cusp protuberances very small; teeth in two median longitudinal rows equal in size and form to lateral teeth, 10-11 in each row; posterior transverse row with 20-22 teeth, implanted erectly with a lateral inclination; major cusps weakly recurved, bluntly pointed, and laterally compressed; minor cusps mostly absent (Ref. 126312). Chest scales small; transition to larger flank scales gradual; minute scales on proximal half of caudal fin; scales on longitudinal line 31-34, scales on upper lateral line 20-23, scales on lower lateral line 8-11, scales between dorsal fin and upper lateral line 5-7, scales between upper lateral line and anal fin 10-11, scales around caudal peduncle 16-17, scales between pectoral and pelvic fins 5-6, infraorbital cheek scales 3-4, postorbital cheek scales 9-12 (Ref. 126312). Caudal fin emarginate; dorsal and anal fins reach to between verticals through caudal-fin base and two scales anterior to this vertical; pectoral and pelvic fins reach to anal opening, pelvic fin reaches to first anal-fin spine in males; first branched pelvic-fin ray elongated in all specimens (Ref. 126312). Ceratobranchial gill rakers in outer row of first gill arch short, stout, and simple; posteriormost rakers anvil-shaped, bi-, or trifid; epibranchial gill rakers slender and simple (Ref. 126312).

Colouration: Colouration in life of dominant males: colour pattern unknown (Ref. 126312). Colouration in life of non-dominant males: dorsal half of body dusky greenish; ventral half of body faint yellow; transition gradual; flank with blue sheen and 5-7 vertical stripes; belly, chest, and cheek whitish; operculum yellowish; snout dusky; eye with (dark) grey outer ring and silver inner ring; nostril and lacrimal stripes and nape band present; interorbital and supraorbital stripes faint; pectoral fin yellowish; pelvic fin black; dorsal fin dusky and with black lappets; anal fin faint orange and with 1-3 relatively large, yellow egg-spots with dusky rings; caudal fin dusky (Ref. 126312). Colouration in life of females and juveniles: body faint yellow with a greenish dorsum; belly and chest white; snout dusky; eye with (dark) grey outer ring and silver inner ring; nostril, interorbital, supraorbital, and lacrimal stripes and mental blotch faint; pectoral and pelvic fin yellowish; dorsal fin dusky and with black lappets; anal fin yellowish and with 2 spots resembling egg-spots; caudal fin dusky (Ref. 126312). Preserved colouration: body brown; dorsum dark brown; chest and belly white; cheek and operculum yellowish; snout dusky; flank with 5-7 faint vertical stripes; nostril and lacrimal stripes and mental blotch present; interorbital and supraorbital stripes faint; pectoral fin hyaline; pelvic fin yellowish with black first rays in females, black in males; dorsal and caudal fins dusky; dorsal fin with black lappets and posterior sooty part; caudal fin with maculated dorsal part; anal fin yellowish and with dusky distal margin and 1-3 relatively large egg-spots (Ref. 126312).