freemani, Sternarchorhynchus de Santana [C. D.] & Vari [R. P.] 2010:296, Fig. 38 [Zoological Journal of the Linnean Society v. 159 (no. 1); ref. 30785] Essequibo River basin, Lower Potaro River at Amatuk (ca. 5°18'N, 59°18'W), Guyana. Holotype: CAS 72246. Paratypes: CAS 72248 (1), 227622 [ex CAS 72246] (1, plus one lost). Type catalog: Ferraris et al. 2017:[13] [ref. 35236]. •Valid as Sternarchorhynchus freemani de Santana & Vari 2010 -- (Ferraris et al. 2017:[13] [ref. 35236], Taphorn et al. 2022:38 [ref. 41297]). Current status: Valid as Sternarchorhynchus freemani de Santana & Vari 2010. Apteronotidae: Apteronotinae. Distribution: South America: lower portions of Essequibo River basin (Guyana) endemic. Habitat: freshwater.