Acanthophacelus Eigenmann, 1907

Schories, Susanne, Meyer, Manfred K. & Schartl, Manfred, 2009, Description of Poecilia (Acanthophacelus) obscura n. sp., (Teleostei: Poeciliidae), a new guppy species from western Trinidad, with remarks on P. w i n g e i and the status of the “ Endler’s guppy ”, Zootaxa 2266, pp. 35-50 : 38

Subgenus Acanthophacelus Eigenmann, 1907

The subgenus Acanthophacelus is characterized by the following derived characters (S1) very long and massive recurved hook present on tip of gonopodium ray 5, hook size longer than depth of the 4p-serrae; (S2) numerous (> 10) long and pointed comb-like spines of gonopodium ray 3; (S3) high degree of black, white, green, blue, yellow and red color polymorphism on body sides and dorsal and tail fins of adult males, females generally lacking prominent markings on body sides except for rare individuals with single irregular black stripes or spots at the caudal fin base or body side.