The Laval Cod, also known as the Labrador Cod, is a marine fish found mainly in the cold waters of the North Atlantic, including Quebec. Although it is not a popular target for sport fishing due to its low fighting ability and unappealing appearance, it piques the interest of biologists for its adaptation to cold and deep environments. Its distribution in the Gulf of St. Lawrence and along the coast of Labrador makes it an interesting subject of study for those interested in Quebec's marine biodiversity.

The Laval Cod has an elongated, serpentine body, typical of members of the Zoarcidae family. Its color generally ranges from brown to dark gray, sometimes with lighter mottling that allows it to camouflage itself in rocky seabeds. Its head is relatively small with a mouth featuring thick lips and sharp teeth, adapted to its carnivorous diet. The dorsal and anal fins are long and extend almost the entire length of the body, often merging with the rounded caudal fin. The scales are small and often difficult to see with the naked eye. Juveniles closely resemble adults, although their coloration may be brighter. There is no obvious sexual dimorphism between males and females, even during spawning.

In Quebec, the Laval Cod is primarily found in the cold waters of the Gulf of St. Lawrence and along the coast of Labrador. It is typically present in areas where water temperatures are low, making it rare in the warmer waters of southern Quebec. Its presence is more pronounced in rocky habitats and seabeds where it can hide from predators and hunt for prey. Although its abundance is not as high as that of some commercial species, it plays an important role in the local marine ecosystem.

The Laval Cod prefers deep, cold waters, typically between 50 and 200 meters deep. It is usually found on rocky or sandy bottoms where it can hide and hunt. It is well adapted to brackish environments, although it prefers salty waters. The ideal temperatures for this species range from 2 to 8 °C, which explains its distribution in Quebec's northern waters. If you are looking to observe it, target rocky areas where it can camouflage itself among algae and rocks.

The life cycle of the Laval Cod begins with spawning, which usually occurs in early winter. Eggs are deposited in rocky crevices where they are protected from predators. Once hatched, young larvae drift with the plankton before beginning to settle on the seabed. Growth is relatively slow due to cold temperatures, and juveniles reach sexual maturity around 3 to 4 years of age. The longevity of this species is about 5 to 8 years.

Spring → Egg hatching → Summer → Juvenile growth → Autumn → Maturation → Winter → Spawning

The Laval Cod is a rather solitary fish, preferring to hide in rocky crevices or under algae. It is not particularly territorial but defends its shelter against intruders. Its sensitivity to noise is low, but it reacts to changes in light, influencing its activity periods, mainly nocturnal. Weather conditions such as wind or atmospheric pressure have little effect on its behavior, given its deep habitat.

The diet of the Laval Cod primarily consists of small fish, crustaceans, and mollusks that it hunts on the seabed. Juveniles mainly feed on zooplankton and small invertebrates until they are large enough to tackle larger prey. In winter, when food resources are less abundant, it may reduce its activity and live off its fat reserves. In spring and summer, it takes advantage of the abundance of food to regain strength.

The Laval Cod is active year-round, but its hunting behaviors vary with the seasons. In spring, it takes advantage of rising temperatures and increasing food resources to feed abundantly. In summer, its activity remains stable, although it may descend deeper to avoid warmer surface temperatures. Autumn is a period of preparation for winter, where it accumulates fat reserves. In winter, its pace slows down, and it focuses on reproduction. The best hours to observe it are generally at night when it emerges from its hiding place to hunt. Weather conditions have little effect on its availability, although overcast skies may encourage daytime activity.

For the Laval Cod, natural-colored lures such as brown, gray, or olive green are recommended, as they closely mimic the prey found in its natural habitat. In clear water, opt for discreet colors, while in murky water, slightly brighter shades may help attract attention. When it’s sunny, lures with some metallic reflections can be effective, while in overcast conditions, matte colors are preferable.

To fish for the Laval Cod, a robust rod of about 2 to 2.5 meters with medium to heavy power is recommended, combined with a fixed spool or spinning reel. Use a 15 to 20 lb line to withstand snags in rocky bottoms. Hooks sized 1/0 to 3/0 are ideal for natural baits. A fluorocarbon leader can be used for its stealth and abrasion resistance.

The Laval Cod should be handled carefully due to its slippery skin and dorsal spines. Use a damp cloth to hold it firmly without damaging its skin. If you wish to release it, ensure it is returned to the water quickly and shows signs of recovery before letting it go. A quick photo can be taken, but avoid keeping it out of the water for too long.

The main predators of the Laval Cod include seals and some large predatory fish like halibut. Seabirds, although less frequent, can also target juveniles when they are closer to the surface.

The Laval Cod is not currently considered a threatened species in Quebec. However, its capture is mostly accidental, and it is important to release it if possible to preserve its populations. Regulations on deep-sea fishing must be adhered to in order to avoid overexploitation of marine species.