axelrodi, Brittanichthys Géry [J.] 1965:22, Figs. 1-4 + 1 in color [Tropical Fish Hobbyist v. 13 (no. 6, Feb.); ref. 1585] Bulufu Beach on the Rio Itu, about 80 kilometers upstream from the meeting with Rio Negro, Brazil, about 0°30'S, 63°30'W. Holotype: USNM 198132. Paratypes: CAS 24778 [ex Sacramento State Univ.] (4), Géry coll. (orig. 4), CAS-SU 62136 (4), USNM 198133 (7), ZMA 113850 (1). Type catalog: Nijssen et al. 1982:15 [ref. 19236], Vari & Howe 1991:9 [ref. 19022]. •Valid as Brittanichthys axelrodi Géry 1965 -- (Malabarba & Weitzman 1999:424 [ref. 24417], Malabarba & Weitzman 2000:278 [ref. 24413], Malabarba in Reis et al. 2003:114 [ref. 27061], DoNascimiento et al. 2017:61 [ref. 35633], Bittencourt et al. 2020:5 [ref. 37634]). Current status: Valid as Brittanichthys axelrodi Géry 1965. Acestrorhamphidae: Megalamphodinae. Distribution: South America: Orinoco River basin, Brazil and Colombia. Habitat: freshwater.