atlanticus, Rhamphichthys Triques [M. L.] 1999:3, Fig. 4 [Revue française d'Aquariologie Herpétologie v. 26 (no. 1/2); ref. 24281] Viana Lake, Pindaré-Mearim river system, Maranhão, Brazil, about 3°14'S, 45°01'W. Holotype: MZUSP 43612. Paratypes: MZUSP 48508 (1). Type catalog: Ferraris et al. 2017:[28] [ref. 35236]. •Valid as Rhamphichthys atlanticus Triques 1999 -- (Ferraris in Reis et al. 2003:492 [ref. 27061], Carvalho & Albert 2015:40 [ref. 33681], Ferraris et al. 2017:[28] [ref. 35236], Koerber et al. 2022:44 [ref. 39235], Vieira et al. 2023:19 [ref. 40759], Limeira-Filho et al. 2024:6 [ref. 41573]). •Synonym of Rhamphichthys pantherinus Castelnau 1855 -- (Carvalho & Albert 2023:44 [ref. 40654]). Current status: Synonym of Rhamphichthys pantherinus Castelnau 1855. Rhamphichthyidae. Habitat: freshwater.