britskii, Acestrorhynchus Menezes [N. A.] 1969:58, 118, Fig. 42 [Arquivos de Zoologia (São Paulo) v. 18 (nos 1-2); ref. 7834] Reprêsa de Três Marias, Rio São Francisco basin, Minas Gerais State, Brazil. Holotype: MZUSP 4406. Paratypes: MZUSP 4405 (1). Type catalog: Oyakawa 1996:447 [ref. 23140]. •Valid as Acestrorhynchus britskii Menezes 1969 -- (Menezes & Géry 1983:590 [ref. 8307], Menezes in Reis et al. 2003:231 [ref. 27061], Toledo-Piza 2007:754 [ref. 29426], Silva et al. 2020:4 [ref. 37809]). Current status: Valid as Acestrorhynchus britskii Menezes 1969. Acestrorhynchidae: Acestrorhynchinae. Distribution: South America: São Francisco River basin (northeastern Brazil). Habitat: freshwater.