I have one quarter size angel in a 29. He's alone because he is the only one I could find locally. Its very shy hiding behind the plants, but did come out to eat today. What is a good way to handle getting another angel (assuming I can find another). Should I get 1 or 2 more. I plan on getting them into a 55 eventually. The 29 has a few plants and a clown pleco right now. Any advice?