I know this thread is OLD...but I had bn wanting to reply for a while but couldnt as I was having problems getting registered...either way people always bring up that the common wolf jus sits around, this in my book would give it the advantage.  The common wolf is just as nasty as the Aimara, at least the ones I have seen, they dont quite as large though.  Of course all fish are different so I have also seen some docile wolves, but for the most part they are AGGRESSIVE, MEAN, fish who dont move around alot.  The Snakehead would be swimming around and leave itself open for attack from underneath whereas the wolf would not react till the snakehead came into to view...and I totally agree with the things said above the wolves are built for combat.  Both species have powerful jaws and sharp teeth (wolves and snakeheads), but the strong, muscular, body and scale structure of the wolves I believe would give it the upper hand.  Well sorry for the long post, but I had bn wanting to say that for a while...LOL...and I love Snakeheads as well...GREAT FISH...and Im not trying to take anything away from them...
 
SEVENDREAMZ