With wolves, you'll just find a mangled corpse in your tank in the morning. Hell last week I woke up to nothing left of my heckelli other then his head
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My 8 inch red hi fin wolf did this, the heckelli was about 4 inch. Just to give you an idea the mayhem a wolf can cause if it wants to. The poly will be fine, but I think the Oscar is living on borrowed time if its kept with the wolf since the wolf has some more growing to do.
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