minissimus, Hypopygus de Santana [C. D.] & Crampton [W. G. R.] 2011:1141, Fig. 25 [Zoological Journal of the Linnean Society v. 163; ref. 31643] Caño Viejita, moriche palm swamp in savannah, road from San Fernando de Atabapo to Santa Bárbara, 16.5 km and 142° from San Fernando de Atabapo, Río Orinoco drainage, 3°55'59.0"N, 67°36'34.2"W, Amazonas, Venezuela. Holotype: UF 175389. Paratypes: UF 148533 (5, 3 c&s). Plus non-type specimens. Type catalog: Ferraris et al. 2017:[27] [ref. 35236]. •Valid as Hypopygus minissimus de Santana & Crampton 2011 -- (Peixoto et al. 2013:232 [ref. 32780], Ferraris et al. 2017:[27] [ref. 35236]). Current status: Valid as Hypopygus minissimus de Santana & Crampton 2011. Rhamphichthyidae. Distribution: Upper Orinoco River basin and tributary of Casiquiare canal, Venezuela. Habitat: freshwater.