i dunno about this. gatf have speed and a 5 lb gatf is a serious fish while a 5 lb aimara is just a baby still. and if you are going by max size the gatf is much bigger. i dont think a wolf could have a chance at even catching a tiger unless the tiger swam right infront of it at night either. also look at the waters they swim in. wolves prefer the calm waters to stalk their prey in while atf sit in the fastest moving waters where fish enter and cant escape from. even that is a serious accomplishment. also just looking at the jaw structure a gatf could take a serious chunk out of anything it bites no matter what the scales are like once it is large enough.