I have my 3" pair of Sajica's in a 75g with lots of rocks, driftwood and plants (plastic). Want to stay with CA's since my water is on the hard side. Some ideas I had were Nic, JD, Salvini, or GT.
Beautiful pair! Not sure what you meant by three pair...the Sajica's are the only fish in the tank right now.With 3 pair in that size tank, I personally would not add more cichlids.
Maybe some surface dwelling geographically correct live bearers.
At adult size I would have considered my sajica pair alone as topping out the volume of that tank, with some dithers. Notice the comparison to the sugar bowl in the back ground
My male, in the shot below was @ 7" and almost as tall.
And the pair bumped off a slightly smaller size pair when spawning was eminent, in a similar size tank.
They aren't established by any means, I am just calling them a pair based on coloration and that one has a nuchal hump developing. I may try to find some more females to make a harem, or try to add a group or Nics or Thorichthys. Crazy?A established breeding pair will make it very hard for any new cichlid to settle into this tank. I'd go with dither fish like duanes recommended.