South American Cichlids • Geophagus Altifrons tankmates

[cichlidboy12]

Hi there I have a standard 4 foot 75 gallon tank that ATM houses 7 Geophagus Altifrons, 10 Black line raspboras, and a few nerite snails. It is planted with a open area of sand in the middle of the tank along with some manzanita and a largish rock to one side. As the Altifrons grow I plan to sell off all but a pair or trio. I was just wondering what other schooling fish or other fish in general you would put into this tank.

the parameters are:
Nitrate- 10ppm
Nitrite- 0ppm
Ammonia-0ppm
pH~7.2-7.4

thanks for the help