I think you're mixing up herotilapia (rainbow cichlid) and archocentrus (kinda spotted brown and purple guys)
I sold (basically gave away) 2 pairs when we moved from Cali. Couldn't get rid of the offspring. Now no one has any. I'd like to try them again. They're really mellow
I had a pair archocentrus spinosissimus they were very mellow. Mine laid eggs a couple of days after i bought them. I had them in a tank with other fish so the babies never made it. I got mine from House of Tropics in Glen Burnie they were real cheap,like$2 for adults. They used to have them all the time. I'll have to go by sometime and see if there are any instock.
I may have to drive to gaithersburg again. I've been there more times in the past 6 weeks then all other times in my life put together. I guess that's were fish come from.