Arizonichthys Nichols [J. T.] 1940:1 Masc. Arizonichthys psammophilus Nichols 1940. Type by monotypy. •Genus inquirendum in Poeciliidae, Poeciliinae -- (Lucinda in Reis et al. 2003:575 [ref. 27061]). •Synonym of Poeciliopsis Regan 1913, subgenus Leptorhaphis Regan 1913 -- (Huber 2019:49 [ref. 36941]). Current status: Synonym of Poeciliopsis Regan 1913. Poeciliidae: Poeciliinae.