Astronotinae
The Astronotinae are a subfamily of cichlids from South America, where they are found in the Amazon, Orinoco, Paraná, and Paraguay River basins, and various rivers in the Guianas. The subfamily includes three genera, each with two species. Although in other classifications all three genera are placed in the subfamily Cichlinae with Astronotus being the only genus in the monogeneric tribe Astronotini of the subfamily Cichlinae and the other two genera being placed in the tribe Cichlini. Genera
The following three genera are classified in this subfamily by FishBase:

Astronotus
Chaetobranchopsis
Chaetobranchus

References 

Cichlid fish of South America
Ray-finned fish subfamilies
Taxa named by Sven O. Kullander
Cichlidae