I have my pair of Ruby Red Dragonettes and my young seahorse in my 13.5g Evo. I search for them literally every day even in that small tank. I wonder how they find that many places to hide! LOL seahorses are hide and seek masters though.Well I like nano tanks partly cause they’re a bit more intimate and you don’t have to go hunting for your Mandarins in a huge tank and wonder if they’re even alive. I have to admit I’d love to have room for more corals, Gonis in particular and probably euphyllia, but for now I’m enjoying what I’ve got.