immaculatus, Rivulus Thomerson [J. E.], Nico [L. G.] & Taphorn [D. C.] 1991:323 [Copeia 1991 (no. 2); ref. 19013] La Mejicana, between Ed Dorado and Sta. Elena de Uairen, Bolivar, Venezuela. Holotype: MBUCV-V-19092. Paratypes: CAS 69412 (2); FMNH 99282 (2), 99283 (4, c&s); MBUCV-V-3983 (42, not 33), V-20290 (1); MCNG 18987 (1), 21355 (6); ?MHNLS (10); USNM 308411 (2).Ferraris 2007:163 [ref. 29155] Type catalog: Lasso et al. 1997:48 [ref. 23639], Provenzano et al. 1998:16 [ref. 24196]. •Valid as Rivulus immaculatus Thomerson, Nico & Taphorn 1991 -- (Huber 1992:252 [ref. 20639], Huber 1999:49 [ref. 23834], Verneulen & Isbrücker 2000:189 [ref. 25219], Lazara 2001:277 [ref. 25711], Costa in Reis et al. 2003:537 [ref. 27061], Radda 2004:21 [ref. 27638], Costa 2006:139 [ref. 28875] in subgenus Cynodonichthys, Costa & De Luca 2011:356 [ref. 31193]). •Valid as Anablepsoides immaculatus (Thomerson, Nico & Taphorn 1991) -- (Costa 2011:243 [ref. 31655], Valdesalici 2015:247 [ref. 34049]). Current status: Valid as Anablepsoides immaculatus (Thomerson, Nico & Taphorn 1991). Rivulidae: Rivulinae. Distribution: Amazon River basin, Venezuela. Habitat: freshwater.