nigroventralis, Gambusia Eigenmann [C. H.] & Henn [A. W.] in Eigenmann 1912:26 [Indiana University Studies No. 16 [sic No. 8]; ref. 1228] Río San Juan at Itsmina, Colombia. Holotype: FMNH 56045 [ex CM 4835]. Paratypes: (20, CM and IU) BMNH 1924.3.3.85-86 (2) Itrsmina, CAS 22765 [ex IU 12689] (5), FMNH 54046 (5), USNM 79205 (1). Type catalog: Henn 1928:87 [ref. 12305], Ibarra & Stewart 1987:37 [ref. 12367], Parenti et al. 1999:8 [ref. 24072]. •Valid as Alloheterandria nigroventralis (Eigenmann & Henn 1912) -- (Meyer & Etzel 1996:3 [ref. 22946], Parenti et al. 1999:8 [ref. 24072]). •Valid as Pseudopoecilia nigroventralis (Eigenmann & Henn 1912) -- (Meyer 2015:325 [ref. 34698]). •Valid as Priapichthys nigroventralis (Eigenmann & Henn 1912) -- (Rosen & Bailey 1963:124 [ref. 7067], Lucinda in Reis et al. 2003:572 [ref. 27061], Lucinda & Reis 2005:39 [ref. 29205], DoNascimiento et al. 2017:102 [ref. 35633], Huber 2019:135 [ref. 36941]). Current status: Valid as Priapichthys nigroventralis (Eigenmann & Henn 1912). Poeciliidae: Poeciliinae. Distribution: Atrato and San Juan River basins, Pacific slope of northwestern Colombia. Habitat: freshwater.