Hey guys, ive got a 75 gallon which has a group (2m 4f) p.elongatus around 2-3 inch,and a 3.5 inch male s.fryeri. I want to add a few fish but the fryeri and elongatus are so aggressive. Do you think a group 1m 3f kenyi, and a group of m. auratus 1m 4f would work? Also could I add one demasoni to the mix? Just one not a whole group, I dont have room or the money for 20 of them little guys. Any sugestions would be great, im looking for color if I can 
