I got a 20 gallon tank for Christmas, I've been doing research on how to get started and what fish to get. I like the yellow lab cichlids,but I've heard they are to big for a 20 gallon tank, is that correct. If correct, I'm looking at getting some dwarf gouramis and maybe some platys,are they good tank mates or any other suggestions. My background is black and I was looking for some color. Thanks for any advice.