Description. D. XVII-XIX, 7 - 9; A. VIII-X, 6 - 7. Larger gill rakers elongated, rounded or pointed, curved ventrad. Scales from lateral line to base of first dorsal-fin ray modally 2.5; circumpeduncular scales usually 17 - 19, modally 18; total vertebrae 27 - 28 (further meristic data appear in Table 3). Largest specimen examined 88 mm SL (maximum size 100 mm SL, according to Kullander 2003). Body depth 46 - 50 % of SL, usually less than 48 % of SL (further morphometric data appear in Table 4). Head profile nearly straight on orbits to convex on nape. Teeth conical, pointed. Upper symphysial teeth abruptly larger than adjacent teeth; lower symphysial teeth lower than adjacent teeth. Lips not medially narrow; lower lip often tapering, corner dorsally rounded, ventrally angled. Pectoral fins always reaching caudad beyond 2 nd anal-fin spine, pelvic fins extending beyond 3 rd anal-fin spine. Filamentous rays of dorsal fin to distal quarter of caudal fin. Up to two lateral-line pored scales on caudal fin, subsidiary scales usually present. Dorsal- and anal-fin interradial scale rows arranged in one or two rows, up to 8 scales long (contra Guenther 1869, who found the soft dorsal and anal fins to have “ scarcely any scales on their base ”). Gut simple, usually shorter than standard length of fish. Peritoneum silvery. Genital papilla tongueshaped, somewhat oval-tubular, slightly notched, tip bluntly triangular, not sunken; pigmented on margins, tip, and base on posterior (caudal) side. Suborbital streak diffuse; stripe from snout to eye usually diffuse. Eyes bluish-green. Fourth bar on side of body I-shaped. Ocellus on spinous dorsal fin of females absent (present in 0.3 % of the specimens examined). Breast olive. Axil of pectoral fin dark; base of pectoral fin usually definitely white. Caudal blotch present as a bar on fin, not on peduncle.
Sumber: A systematic revision of the genus Archocentrus (Perciformes: Cichlidae), with the description of two new genera and six new species.