can a wolf fish really kill a pirahna?

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i wouldnt be surprised...stick any 2 similarly sized predatory fish together and you'll have results going both ways. you didnt say anything about keeping em together but yea i'd advise against it
 
Most definitely

First of all, piranhas are pack fish, which means they hunt in packs. Second, piranhas are extremely skittish. Third, wolffish have relatively larger mouths. And forth WolfFish have been reported as being highly aggressive and piranhas, although have a reputation for being aggressive, actually are not aggressive.
 
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