Mine seems very happy, I used to have him in the 45 gallon but he looked really lost in there and didn’t eat very well even though there weren’t any other fish so he’s in the 20 now. Eats like a pig and always photobombsAwesome! I almost picked one up today! I got two zebra striped blennies instead but I think I may get the Cherub. It's so pretty. I was just worried since most angels need more space.