schomburgki, Rhamphichthys Kaup [J. J.] 1857:135, Fig. 10 [Catalogue of the apodal fish in the collection of the British Museum; ref. 2573] Rivers of Demerara, northern Guyana. Holotype (unique): MNHN 0000-3958. Type catalog: Ferraris et al. 2017:[29] [ref. 35236] with remarks. •Valid as Rhamphichthys schomburgki Kaup 1857 -- (Mago-Leccia 1994:41 [ref. 21320]). •Provisionally a synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Triques 1999:1 [ref. 24281]). •Synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Mago-Leccia 1994:41 [ref. 21320] with question, Ferraris in Reis et al. 2003:493 [ref. 27061] with question, Ferraris et al. 2017:[29] [ref. 35236], Carvalho & Albert 2023:56 [ref. 40654]). Current status: Synonym of Rhamphichthys rostratus (Linnaeus 1766). Rhamphichthyidae. Habitat: freshwater.