The Atlantic wolf fish is a top predator, and with a row of long sharp teeth that can often be seen protruding from its mouth, it can inflict a very painful bite. They can grow up to five feet long, and weigh up to 50 pounds. They mainly feed on smaller fish and crustaceans.
"It killed everything in the trap," Knowles says in the video.
Knowles is a fisherman known for catching lobsters off Maine. Lobsters are caught using traps, which occasionally lure in other species, such as this wolf fish.
"We don't get them very often, they're protected," Knowles says in the video. "We let them go as soon as we get them. I guess we'll give him a snack seeing as he's already killed everything."
The huge wolf fish nearly bit the Maine fisherman as he grappled with it.
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