Finally something not involving my 55 lol. I have a 37 gallon with two platies, two mollies and one baby angelfish about the size of a quarter. A standard 20 gallon that has a male and female German Ram Cichlid, not full grown, they're about an inch. And a 5 gallon with a Betta and 4 neon tetras. Okay, now that the info is given, here's my thoughts. I am debating moving my Rams into my 37, but I don't know how well an Angel would get along with them? I've read so much debate on size requirements for either singles or a pair of angels. I had originally thought to get a second and hope they pair (or be two females), but if I move the Rams, I think I'd have just the one.... maybe?? *IF* I moved the Rams, I was thinking of moving my Betta and Neons into the 20 and getting more neons. As I've been informed they need a bigger school than I thought. *IF* I moved my Betta then I was debating getting a single pea puffer for my 5? I can't seem to find tank size requirements for a single puffer. All I can find are for "small schools" which ranges from 10-15 gallons. Whatever a small school means. But this may just also be me wanting to make room for more fish so feel free to tell me I'm crazy and need to stop. I think regardless I'm going to move the Neons into the 20, whether it be with the Betta or I'll just have a school of Neons in with the Rams. Sorry for the ramble, just trying to share my thoughts. Though I may wake up tomorrow and think otherwise. But I appreciate any and all advice I get on here!