Zoo, give him a little time to ree-up. He does have a couple notches on his gill plate; a 6" Texas/flowerhorn & a 6-7" jade goby.
He has been in a constant battle with a 17 -18" GCK for a couple months. Prime him up with some feeders and Krill, he will be back to is nasty old self.........
It will take your wallago a long time to become actively aggressive you'll just begin to notice your fish being picked off one at a time. Also where are those pitcures you were going to post of yours.