Thanks for the suggestion, but the only other tank I have is a 25 gallon, but that has fish that I know that the leopard would beat up. They're in there because she wasn't getting along with them.
The leopard shredded my sleeper gobies fins up as well.
The aggression has driven my mandarin to constant hiding when the leopard is out and about.
My mandarin has also completely stopped eating. I know that this isn't because of a lack of food or preparation on my part, I see copepods all over the glass and rocks.
The leopard is constantly picking, but the mandarin has stopped, and will no longer eat frozen. I've kept it in an acclimation box for a while to try and get it to feed again, but it just hides.
I'm going to have to rehome the leopard, but I don't want to pass an aggressive fish on to someone else.