[Buzz]

I'm looking for something aggresive that is a keep alone fish. This is what the LFS told me he could get and I was looking for some input. I searched on the net and didn't find alot of info on any of these. So any help would be greatly appreciated or other suggestions.
Sailfin Scorpion fish
Flasher Scorpion
Cockatoo Scorpian
Pop Eyed Sea Goblin