I really really like Lion Fish. Unfortunately they get eaten. I do have a Porcupine Puffer in with the eels though and man I've grown attached to that lil bugger.... Such personable fish..... Barney eats him and I'm going to get an gator to feed Barney to. lol
There's some pretty neat Scorpions and Anglers out there, but they'd be feeders just like the Lions.
My million dollar question I've asked here before and didn't really get a clear answer for - Could a guy keep a Wobby with the bigger eels????