Hi. I have a 20 gallon long tank empty and i am fairly new to aquariums and types of fish but i thought about cycling it and putting a couple fish in there. I have a 55 gallon with my Red Devil Cichlid which is my only fish and only fish tank. I love my fish but she cant have any tank mates and i want to have a small community of fish (if possible) so my question is does anyone have suggestions for fish that could live comfortably in that size tank??? I dont mind if they are semi-aggressive or non-aggressive. I just dont want to overcrowd the tank or get the wrong fish for the tank size. Thanks guys