The wolf fish, Anarhichas denticulatus, is a fascinating fish from the cold waters of Quebec, often overlooked by sport fishermen due to its deep habitat and unconventional appearance. Although it is not the main target of sport fishing outings, it attracts the interest of curious individuals and marine biologists due to its important ecological role. Primarily distributed in the cold waters of the North Atlantic, this fish is known for its ability to survive in hostile and dimly lit environments. Its moderate aggressiveness and difficulty in capture make it a challenge for experienced anglers seeking a unique experience in saltwater.

The wolf fish is distinguished by its elongated and robust body, covered with small scales that give it a smooth appearance. Its color ranges from bluish-gray to brown, with irregular darker band patterns that allow it to camouflage among rocks and algae. Its head is wide, as its name suggests, with a prominent lower jaw equipped with powerful teeth adapted to crush mollusk shells. Its pectoral fins are large and rounded, facilitating its movement in rocky bottoms. The tail is slightly forked, adding to its distinctive look. Young wolf fish have more pronounced patterns and brighter colors than adults. During the spawning period, males and females do not exhibit marked sexual dimorphism, making it difficult to distinguish them with the naked eye.

In Quebec, the wolf fish is mainly found in the deep waters of the Gulf of St. Lawrence and the North Atlantic. It is more abundant in areas where water temperature remains low year-round, typically below 10 °C. Although it can be found sporadically in certain bays and fjords, its presence is more pronounced in remote coastal areas, where cold currents dominate. Due to its particular habitat, it is less often observed by recreational fishermen, but remains an intriguing species for researchers and marine biodiversity enthusiasts.

The wolf fish prefers deep marine environments, often between 100 and 600 meters deep. It is generally associated with rocky bottoms and underwater structures such as reefs and canyons, where it finds shelter and food. This fish is well adapted to cold temperatures, thriving in waters between 2 and 7 °C. To find it, one should target areas where cold currents bring nutrients, attracting a multitude of marine organisms. Although it can tolerate variations in salinity, it prefers relatively stable waters that are not disturbed by human activities.

The spawning of the wolf fish generally occurs in the fall, when water temperatures are most favorable for egg survival. Females lay relatively large eggs, which are often deposited in rock crevices to protect them from predators. Young wolves emerge after several months, already well adapted to the hostile conditions of the depths. Growth is slow but steady, with sexual maturity reached around 5 to 7 years. These fish have an impressive longevity, living up to 16 years or more under optimal conditions. Timeline: Spring → growth of young → Summer → intensive feeding → Fall → spawning → Winter → survival in deep waters.

The wolf fish is a rather solitary fish, preferring to hunt and live alone in the depths. It is not particularly territorial but will defend its immediate space if necessary. Its reactions to environmental changes are moderate; it can adapt to minor variations in pressure and temperature but remains sensitive to acoustic and light disturbances. This fish is more active at night or in low-light conditions, using its keen senses to locate its prey.

The diet of the wolf fish primarily consists of mollusks and crustaceans, which it can crush with its powerful jaws. Young fish feed on small invertebrates and plankton, while adults target tougher prey like sea urchins and starfish. In winter, when prey availability decreases, it may reduce its activity and consume less. Its diet is opportunistic, adapting to the resources available in its immediate environment.

In spring, the wolf fish takes advantage of the marine life resurgence to actively feed and prepare for the spawning season. In summer, although the waters are warmer, it remains in the depths where temperatures are stable. Fall is the spawning period, and although the fish is less active, it remains vigilant in protecting its eggs. In winter, it adopts a more sedentary behavior, limiting its movements. The best times to target it are at dusk or dawn, when feeding activity is at its peak. Weather conditions have little influence on its behavior, but major disturbances can make it harder to locate.

In clear waters, favor lures with natural colors like brown, gray, or green to mimic the wolf fish's prey. In murky water, brighter colors like yellow or orange can help attract attention. In sunny weather, metal lures can reflect light and draw the fish in, while in overcast conditions, matte colors are preferable. In deeper waters, phosphorescent lures can be effective to increase visibility.

To target the wolf fish, use a sturdy rod between 2.4 to 3 meters, with heavy power and moderate action to withstand deep fights. A robust reel is recommended, with a line capacity of 30 to 50 lb to handle tough conditions. Hooks should be strong, size 4/0 to 6/0, and 50 lb fluorocarbon leaders are advised to avoid cuts from the fish's teeth.

When handling a wolf fish, be cautious of its sharp teeth. Use pliers to remove the hook and minimize the time out of the water for the fish. For a successful release, support the fish under the belly and ensure it is well oxygenated before releasing. For photos, avoid holding it by the gills or dragging it on rough surfaces.

The wolf fish has few natural predators due to its deep habitat. However, larger fish like Greenland sharks and some marine mammals may occasionally prey on it. Seabirds do not pose a direct threat due to the depth at which it lives.

In Quebec, the wolf fish is not considered a threatened species, but its populations are monitored due to their sensitivity to environmental changes and overfishing in certain regions of the North Atlantic. Sport fishing for this species is regulated to prevent overexploitation, and catch-and-release is encouraged to promote population conservation.