I have an established cichlid aquarium housing a mix of venustus, green terrors, electric yellows, flowerhorns, plecos, and one angelfish. The angelfish is the largest of all the fish and is the leader of the tank. All of the other fish are juveniles except for the yellow labs which are Fry. I want to add a juvenile fahaka puffer of about 3 in. I'm thinking he will grow to love and tolerate the other fish. Does anybody think this will work