ca cichlids

Selling a rather rare CA cichlid - my male 8" Oscura Heterospila or Montecristo cichlid. very health, active and mellow CA cichlid, one of the most beautiful imo. First $60 picks him up.

I'm going to be moving some fish to their semi-permanent home soon(it's a massive 300 gallon tote, huge score at $200, while I save up for an actual tank which is why it's semi) and want to have all intended inhabitants quarantined and good to go so I can add them all at once and not have to...

Is this possible like with Africans? Was thinking of buying around 70 juveniles (species that are aggressive but stay around 12-14”), raising them together, selling off the most aggressive ones and hopefully ending up with a community of maybe 15-20 pcs for a 180 gallon. The idea would be to...