heleios, Rhamphichthys Carvalho [T. P.] & Albert [J. S.] 2015:35, Figs. 1-3, 4A, 5A, 7A [Copeia v. 103 (no. 1); ref. 33681] Amazonas, Iranduba, confluence of Rio Negro and Solimões at Costa do Catalão, Brazil, 3°09'S, 59°54'W. Holotype: INPA 42309. Paratypes: ANSP, INPA, MCP, MZUSP. Type catalog: Ferraris et al. 2017:[28] [ref. 35236]. •Valid as Rhamphichthys heleios Carvalho & Albert 2015 -- (Ferraris et al. 2017:[28] [ref. 35236], Carvalho & Albert 2023:35 [ref. 40654]). Current status: Valid as Rhamphichthys heleios Carvalho & Albert 2015. Rhamphichthyidae. Distribution: South America: Solimões and Amazon Rivers in Brazil upstream of the mouth of the Madeira River and, Guaporé River drainage, Amazon basin, Brazil. Habitat: freshwater.