I've had a African cichlid (assorted African tank at petsmart) in a 5g all by himself for two years. The cichlid is light blueish/purplish and about 2" long. I wish I knew what I know now before I bought him. Anyways I have a 20g long tank with only a green phantom pleco, he's about 5-6.5" and is very shy. Could I put these together? I know cichlids don't typically pick on plecos but the cichlid has killed several ghost shrimp before. The pleco is massive in comparison size wise, there is also a pretty intricate driftwood setup in the tank. I know 20g isn't ideal for either species but it's what I got. The pleco has been fine in the 20g and the cichlid has been fine in the 5g, but I know the cichlid would like the space.