Atlantic Hagfish Basics

The Atlantic hagfish is a jawless fish found along the Atlantic coast of North America, ranging from the Gulf of St. Lawrence south to the Gulf of Mexico. It lives on the seafloor in depths between 200 and 4,000 feet, where it feeds on dead fish and organic matter that settles on the bottom. Hagfish are not a target species for recreational fishing — they are primarily caught by commercial fisheries for their skin, which is processed into leather products sometimes called "eel skin."

If you encounter hagfish while fishing deeper waters or bottom-fishing for other species, you should know what you are looking at. Hagfish are eel-like creatures, typically 12 to 24 inches long, with a single nostril at the front of their head and a mouth surrounded by tooth-like structures made of keratin. They have no scales and produce a thick, slimy mucus when stressed — a defense mechanism that makes them difficult to handle. Their body is soft and lacks the rigid skeleton of most fish; instead, they have a notochord, a flexible rod that runs along their spine.

Key Takeaways

  • Atlantic hagfish live on the seafloor at depths of 200 to 4,000 feet along the Atlantic coast from Canada to the Gulf of Mexico.
  • They are not a recreational fishing target but may be caught incidentally while bottom-fishing for other species in deep water.
  • Hagfish produce copious slime when handled, which can coat your hands and fishing gear; rinsing with fresh water removes it more effectively than wiping.
  • Commercial hagfish fisheries operate under state and federal regulations that vary by region and season.
  • If you catch a hagfish, you can release it unharmed by cutting the line or gently placing it back in the water.

Where Atlantic Hagfish Live

Atlantic hagfish are found along the continental shelf and slope of the western Atlantic, from the Gulf of St. Lawrence in Canada through the Mid-Atlantic states and down to the Gulf of Mexico. They prefer soft sediment on the seafloor — mud and silt bottoms where they can burrow and hunt for food. The deeper you fish, the more likely you are to encounter them; most hagfish live below 300 feet, though some populations exist in shallower water off the New England coast.

The densest populations are found off the coasts of New England, the Mid-Atlantic, and the Carolinas, where commercial hagfish fisheries operate. If you are bottom-fishing for cod, haddock, or other groundfish in these regions, or if you are fishing for deep-water species like monkfish or skates, you may catch hagfish as bycatch. They are most common in winter and early spring, when commercial fishing pressure is highest and when they move into slightly shallower water.

What Hagfish Eat and How They Hunt

Atlantic hagfish are scavengers that feed primarily on dead fish and whale carcasses that sink to the seafloor. They use their single nostril to detect the scent of decaying organic matter from considerable distances, then navigate along the bottom to find the source. Once they locate food, they use their tooth-like structures to rasp away tissue and burrow into the carcass.

Hagfish are also known to attack living fish that are trapped in nets or weakened by injury. They bore into the body cavity and consume the internal organs, leaving behind a hollowed-out shell. This behavior makes them a nuisance in commercial fisheries, where they can damage catches before the nets are hauled to the surface. In the deep ocean, however, hagfish play an important ecological role by breaking down dead matter and recycling nutrients.

The Slime Defense and Handling Hagfish

When threatened or stressed, Atlantic hagfish produce a thick, milky slime from glands along their body. This mucus can coat your hands, your fishing line, and your gear within seconds, making the fish extremely difficult to hold. The slime is not toxic or harmful to humans, but it is remarkably effective at reducing friction and allowing the hagfish to escape from predators and fishing nets.

If you catch a hagfish, the easiest approach is to cut your line and let it go. If you want to remove the hook, wear gloves and work quickly. Rinse your hands and gear with fresh water as soon as possible — saltwater does not remove the slime effectively, but fresh water breaks it down. Do not attempt to grab the fish by hand without protection; the slime will coat your skin and make the fish nearly impossible to control. Once you have released the hagfish, it will recover fully and return to the seafloor.

Commercial Hagfish Fisheries and Regulations

Commercial hagfish fishing occurs along much of the Atlantic coast, with the largest fisheries operating off New England and the Mid-Atlantic. Fishermen use baited traps and pots to catch hagfish, which are then processed for their skin. The leather market for hagfish skin fluctuates based on demand and international trade, which affects how actively fisheries operate from year to year.

Regulations governing hagfish fishing vary by state and federal jurisdiction. Some states, including Massachusetts and Rhode Island, have specific rules about hagfish harvest and trap placement. The Atlantic States Marine Fisheries Commission (ASMFC) monitors hagfish populations and coordinates management across state lines. If you are interested in the commercial side of hagfish fishing or want to know the current regulations in your area, contact your state's fish and wildlife agency or visit the ASMFC website.

Hagfish as Bycatch in Recreational Fishing

Recreational anglers fishing deep water for groundfish or other bottom-dwelling species occasionally catch hagfish. They are not a prized catch, but they are a sign that you are fishing in the right depth range and habitat for your target species. If you are bottom-fishing off the New England coast or the Mid-Atlantic in winter, expect to encounter hagfish from time to time.

Hagfish bycatch is generally not a conservation concern for recreational fisheries because the numbers caught are small compared to commercial harvest. However, if you catch one, handle it respectfully and release it quickly. The fish will not be harmed by the encounter, and you will avoid the mess of dealing with the slime. Some anglers keep a pair of scissors or a knife handy specifically to cut the line on unwanted catches like hagfish, which saves time and reduces stress on the fish.

Frequently Asked Questions

Is it safe to eat Atlantic hagfish?

Hagfish are not typically eaten in North America, though they are consumed in some parts of Asia. The meat is edible but not commonly marketed for human consumption. Commercial hagfish fisheries focus almost entirely on the skin, which is processed into leather products.

Why do hagfish produce so much slime?

The slime is a defense mechanism that makes it nearly impossible for predators to grab and hold the fish. It also allows hagfish to escape from nets and traps. The mucus is produced by specialized glands along the body and can coat an area several times the fish's own size within seconds.

Can I keep a hagfish as a pet?

Hagfish are not suitable for home aquariums. They require cold, deep-water conditions that are difficult to replicate, and they produce slime that would foul a tank very quickly. They are also scavengers that need a steady supply of dead organic matter, which is impractical to provide in captivity.

What is hagfish leather used for?

Hagfish skin is processed into leather that is used for wallets, belts, and other accessories. The leather is durable and has a distinctive texture. It is sometimes marketed as "eel skin," though true eels are a different species. The market for hagfish leather varies based on fashion trends and international demand.

Are hagfish endangered?

Atlantic hagfish populations are not currently listed as endangered, though some regional populations have been affected by heavy commercial fishing. Management agencies monitor hagfish stocks and adjust regulations as needed. Recreational fishing pressure on hagfish is minimal and not considered a conservation threat.