discus, Symphysodon Heckel [J. J.] 1840:333, Pl. 30 (figs. 21-24) [Annalen des Wiener Museums der Naturgeschichte v. 2; ref. 2064] Moreré am Rio Negro, Brazil. Holotype (unique): NMW 35612. See Bleher et al. 2007:154 [ref. 29227] for type locality. •Valid as Symphysodon discus Heckel 1840 -- (Fuller et al. 1999:447 [ref. 25838], Kullander in Reis et al. 2003:642 [ref. 27061], Bleher et al. 2007:154 [ref. 29227], Ready et al. 2006:200 [ref. 29520], Bleher 2011:1286 [ref. 31397], Amado et al. 2011:13 [ref. 38953]). Current status: Valid as Symphysodon discus Heckel 1840. Cichlidae: Cichlinae. Distribution: South America: lower Rio Negro, Rio Ururum, Rio Nhamundá and Rio Abacaxis basins, Brazil. Habitat: freshwater.