I've done sunfish and cichlids before (CA's) - redbreast (what I knew as missouri longear), Louisiana long ear, and western dollars. They were housed with texas, carpintis, GT, and a few other much larger CA species that could deal with nuetral water parameters. Kept temp at 75, a little low for CA's, a little warm for sunfish. Overall it was ok, but ALL of the CA's were considerably larger than the sunfish. The redbreast are fin-nippers. They reminded me a lot of keeping mbuna - they were too small to fight back or do any real damage, they just never stopped pestering...