Apistogramma wolli Römer, Soares, Dávila, Duponchelle, Renno & Hahn 2015

Apistogramma wolli can be distinguished by the following characters: medium-sized(males to 62 mm, females to 40 mm SL); laterally compressed; moderately high-backed and elongate; and pronounced sexual dimorphism and dichromatism. It differs from all known congeners by a combination of the following characters: massive jaws and hypertrophied yellow lips in adult males; dorsal fin with serrated membranes, truncated in females; small (but in females large) squarish lateral spot on center of vertical bar 3; large round, in females upright oval, caudal spot; caudal fin lyrate, in females rounded, with red marginal band to upper and lower lobes (Ref. 104987).

Dorsal spines (total): 16 - 17; Dorsal soft rays (total): 3 - 6; Analspines: 3; Analsoft rays: 5 - 7; Vertebrae: 23 - 24

Collected in a few small, shallow blackwater rainforest streams along both sides of the border between Ecuador and Peru. Observed usually hiding among the leaf litter, which (apart from scarce driftwood) is the main substrate covering the sandy bottom (Ref. 104987).