Author: (Heckel, 1840)
FBname: Doublespot acara
Remark: Redescribed by Kullander & Ferreira (1990).
Comments: Collected from lotic black to clear water:  in Rio Uatumá, this species was collected from marginal pools in rapids after the Balbina dam was closed and the river level dropped  considerably below normal low water Ievel; Río Preto da Eva site was a relatively slow flowing small forest stream, while the Igarape Tarumázinho site was a swift flowing forest stream.  Although collections indicate swamps and lakes, this species has been collected mostly in running water.  Reported food items of specimens from Río Negro were chiefly fish and detritus (Ref. 86501).  Inhabits rivers (Ref. 12251).  Maximum  length 20.0 cm TL (Ref. 40602).