PORTLAND, Maine - A ferocious-looking denizen of the deep that can gobble up whole urchins and crabs in a few swift chomps needs protection, according to a petition filed with the federal government.

The Conservation Law Foundation asked the National Oceanic and Atmospheric Administration on Tuesday to list the Atlantic wolffish — a species with large protruding teeth and a face that's downright ugly — as endangered under the Endangered Species Act.

The fish, also called an ocean catfish, is under pressure from commercial and recreational fishermen and could be wiped out if nothing is done, the Boston-based conservation group said.

"The fishing pressure is going to continue to haunt this fish right down to extinction unless something is done," said Peter Shelley, the foundation's vice president.

The slow-growing, late-maturing wolffish lives along the rocky ocean bottom in 250- to 400-foot waters off New England. They can grow up to 5 feet long and weigh up to 40 pounds. Their powerful jaws and teeth can crush lobsters, urchins, clams, scallops and crabs.

Although the fish aren't targeted by commercial fishermen, fishing nets and dredges that are dragged along the ocean bottom have destroyed much of the fish's habitat, diminishing both their numbers and range, according to the conservation group.

Although the fish is ugly, it is tasty and can be found at some seafood retailers and on the menus of upscale restaurants, Shelley said.

The National Marine Fisheries Service has listed the fish as a "species of concern," calling the stock overexploited and severely depleted.

If the fish is given endangered status, it could result in additional restrictions on New England fishermen, who are already tightly regulated. The conservation group says measures to reduce wolffish mortality could range from simply throwing them back to area closures.

That possibility didn't sit well with fishermen.

"They always have to find something to go after us," said Angela Sanfilippo, executive director of the Massachusetts Fishermen's Partnership in Gloucester, Mass.