well i have a snowflake moray, ppl usually sugges to leave it in a large tank with tonts hiding places. I left mine in the 35g refugium which i think a bit small but it seems doing alright. I wouldn't sugeest to leave it in the tank with any of those "slow and peaceful"fish such as the whole family of dragonet , sometimes even small clown fish would be a nice dinner when they rest. U need to be caution urself also, since when i put my hand in the tank, instead of hiding like other fish does, my moray actrually came ou and try to get as close to my hand as possible, I wouldn't dare to let it get that close within strike distances,but the good thing about that is i start to train it hand feeding, prety cool