depending on your filtration,that would not be too much,i have 2x12 inche tiger oscars,1x10 inche uaru,2 pearsei cichlids(1x7inches,1x4 inches),2x8 inches bocorti cichlids,and 1x7 inche synspilum,1x3 inche nicraguense and a 6 inche bushynose pleco in a 180 gallon(filtration is alot though 1x60 gallon wet/dry,1 fx5,2ac 110's0but i don't have a problem with water quality(50 percent water change weekly)and agression is minimal,the male bocourti chases the female alot thats it.It all depends on the fish it self what might work for some may not work for others(trail and error)

