alleni, Prodontocharax Böhlke [J. E.] 1953:661 [Annals and Magazine of Natural History (Series 12) v. 6 (no. 69) (art. 64); ref. 10330] Río Ucayali, Cashiboya, about 7°31'S, 74°55'W, Peru. Holotype: CAS-SU 17472. Paratypes: CAS-SU 17473 (15; 1 c&s), 17474 (2), 19050 (9); USNM 157366 (1). Type catalog: Vari & Howe 1991:35 [ref. 19022]. •Valid as Prodontocharax alleni Böhlke 1953 -- (Ortega & Vari 1986:9 [ref. 9708], Malabarba in Reis et al. 2003:218 [ref. 27061], Barriga Salazar 2014:109 [ref. 35745], Sarmiento et al. 2014:185 [ref. 35004], Meza-Vargas et al. 2021:19 [ref. 39298]). •Synonym of Amblystilbe howesi Fowler 1940 -- (Bertaco et al. 2023:21 [ref. 40512]). Current status: Synonym of Amblystilbe howesi Fowler 1940. Characidae: Cheirodontinae. Habitat: freshwater.