12260 Acaronia nassa (Heckel, 1840) Cichlidae Cichlids Cichlasomatinae Cichliformes Teleostei Bigeye cichlid South America: Amazonas lowlands in Peru, Brazil, and Colombia, Bolivian Amazon basin, middle and lower Negro River, Branco River, also Amapá (Brazil), the Oyapock drainage in French Guiana, and the Essequibo drainage in Guyana. AMNH 12745 Acaronia nassa AMNH 214813 Acaronia nassa AMNH 21794 Acaronia nassa P A4040.0031A4040.0035 1 S 56 W Acaronia nassa AMNH 7084 1908 Acaronia nassa AMNH 4427 1912 Acaronia nassa AMNH 14347 1937 Acaronia nassa AMNH 14639 1939 Acaronia nassa AMNH 215129 1939 Acaronia nassa AMNH 39748 1964 Acaronia nassa AMNH 40030 1964 Acaronia nassa AMNH 52610 1964 Acaronia nassa AMNH 229274 1998 Acaronia nassa GCRL 29750 1999 Acaronia nassa