I finally got a job at Petsmart and I can get a good deal with my discount on a 50 gallon tank. I plan to use flourite/gravel as the substrate and buy 2 48" shoplight kits (going for somewhat of a planted tank). In my store, there are six firemouth cichlids that are obviously a tightly knit group and act naturally and normally together. Would a 50 gallon have enough room for any other fish (maybe a rubber lipped pleco or a pictus cat) in the event the six firemouths decide to breed?