curviceps, Acara Ahl [E.] 1923:44, Fig. 5 [Mitteilungen aus dem Zoologischen Museum in Berlin v. 11 (no. 1); ref. 19933] Amazon River, Brazil. Holotype: ZMB 31324. Paratypes: (7) ZMB 32398-400 (3, 2, 1). Types mentioned: Paepke 1995:95 [ref. 21847]. Type catalog: Paepke & Schindler 2013:260 [ref. 32895]. •Valid as Laetacara curviceps (Ahl 1923) -- (Keith et al. 2000:224 [ref. 24547] as cf. curviceps, Kullander in Reis et al. 2003:638 [ref. 27061], Staeck 2003:158 [ref. 27488] dating to 1924, Staeck & Schindler 2007:64 [ref. 29233], Ottoni & Costa 2009:42 [ref. 30198], Ottoni et al. 2009:124 [ref. 30600], Ottoni et al. 2012:187 [ref. 32046], Staeck 2017:258 [ref. 35639], Ottoni 2018:51 [ref. 35872]). Current status: Valid as Laetacara curviceps (Ahl 1923). Cichlidae: Cichlinae. Distribution: Lower Amazon River basin, Brazil. Habitat: freshwater.