Hello! I am moving my breeding pair of a Ruby Red Peacock Cichlid and a Female OB to my main cichlid tank (55 gal). That leaves the 20 gallon long they were breeding in open now. Does anyone have any stocking ideas for the 20 long? I'm looking to have some good numbers of fish in there, with some color, and some variety in their swimming levels. Also, if any way possible, I would prefer to keep the cost under $50. Any ideas? Thanks!