flavescens, Chaetobranchus Heckel [J. J.] 1840:402 [Annalen des Wiener Museums der Naturgeschichte v. 2; ref. 2064] Rio Guaporé, tributary of Rio Negro, Mato Grosso, Brazil. Syntypes: NMW 16172 (1) Mato Grosso, 16428 (1) Mato Grosso, 32922 (1) Rio Negro, 32931 (1) Rio Guaporé, 32932 (1) Rio Guaporé, 32933 (1) Rio Guaporé, 58856 (1) Mato Grosso, 76431 (1) Mato Grosso; SMF 5410 [ex NMW] (1, dry). •Valid as Chaetobranchus flavescens Heckel 1840 -- (Ortega & Vari 1986:20 [ref. 9708], Kullander 1986:73 [ref. 12439], Kullander & Nijssen 1989:25 [ref. 14136], Keith et al. 2000:180 [ref. 24547], Lasso & Machado-Allison 2000:66 [ref. 27968], Lasso et al. 2001:101 [ref. 25928], Kullander in Reis et al. 2003:620 [ref. 27061], Barriga Salazar 2014:118 [ref. 35745], Sarmiento et al. 2014:125, 189 [ref. 35004], DoNascimiento et al. 2017:96 [ref. 35633], Silvano et al. 2020:334 [ref. 38134], Meza-Vargas et al. 2021:28 [ref. 39298], Taphorn et al. 2022:31 [ref. 41297]). Current status: Valid as Chaetobranchus flavescens Heckel 1840. Cichlidae: Cichlinae. Distribution: Widespread in South America: Brazil, Ecuador, Colombia, Bolivia, French Guiana, Guyana, Peru, Suriname and Venezuela. Habitat: freshwater.