argyrostictus, Geophagus Kullander [S. O.] 1991:130, Fig. 1 [Cybium v. 15 (no. 2); ref. 20053] Rocky pool near cachoeira, Belo Monte, Rio Xingu drainage, Pará, Brazil. Holotype: MZUSP 32906. Paratypes: IRSNB 785 (44); MZUSP 36875 (4), 39087 (17); NRM 13981 (5), 13997 (5); NMW 24023 (1); ZSM 27494 [ex NRM] (3). •Valid as Geophagus argyrostictus Kullander 1991 -- (Kullander in Reis et al. 2003:632 [ref. 27061], Schindler & Staeck 2006:96 [ref. 29420], Deprá et al. 2014:745 [ref. 33631], Ximenes et al. 2021:4 [ref. 38836], Chuctaya et al. 2022:13 [ref. 39723]). Current status: Valid as Geophagus argyrostictus Kullander 1991. Cichlidae: Cichlinae. Distribution: South America: Xingu River drainage, Amazon basin, Brazil. Habitat: freshwater.