Chargement...
The Atlantic tomcod, often referred to as the "snow fish," is a well-known species appreciated for ice fishing in Quebec, particularly in the Saint Lawrence River and its tributaries. Although its modest size does not make it a formidable fighter, it attracts anglers due to its abundance and ease of capture during the winter months. Fishing enthusiasts enjoy it for both the social experience and the catch itself, as it is often fished in large quantities. Its distribution is mainly concentrated in brackish and saltwater, but it can also be found in some freshwater streams, making it a rather adaptable species.
The Atlantic tomcod has an elongated and fusiform body, typical of members of the Gadidae family. Its color ranges from olive brown to gray on the back, lightening towards the sides and becoming almost white on the belly. It often sports scattered darker spots on the sides, which can aid in its identification. Its mouth is relatively small, with a slightly prominent lower jaw. The pectoral fins are well developed, and its caudal fin is slightly forked, favoring quick swimming in currents. The scales are small and smooth, making its skin slightly slippery. Young tomcods are generally paler than adults, and during the spawning period, males may develop slightly brighter colors. The differentiation between males and females is subtle, but males tend to be more robust.
The Atlantic tomcod is often confused with other species of marine fish.
| Criterion | Atlantic tomcod | Cod |
|---|---|---|
| Size | 6 to 12 inches | 20 to 40 inches |
| Color | Olive brown to gray | Olive green to brown |
| Habitat | Brackish and freshwater | Deep marine waters |
In Quebec, the Atlantic tomcod is primarily found in the Saint Lawrence River and its tributaries, particularly in brackish waters near the estuary. It is particularly abundant in the Côte-Nord and Gaspésie regions. It can also be found in certain rivers such as the Saguenay River. It is rare in purely freshwater areas inland, preferring habitats where saltwater and freshwater mix. Its presence is seasonal, increasing during the winter months when spawning conditions are favorable.
The Atlantic tomcod prefers cold, brackish waters but can venture into freshwater streams, especially during the spawning period. It is often found in estuaries where freshwater mixes with saltwater. It enjoys sandy or muddy bottoms where it can easily feed. This fish is generally observed at depths ranging from a few meters to about thirty meters, although it can sometimes be closer to the surface. During winter, it is often fished through the ice in areas where the current is moderate.
The Atlantic tomcod spawns in winter, usually between December and March, when water temperatures are cold, typically around 32 to 41 °F. Females lay thousands of eggs that adhere to the substrate on the bottom. The eggs hatch after about two months, and the fry begin their life feeding on zooplankton. Growth is rapid, and sexual maturity is reached in one to two years. Their lifespan is relatively short, ranging from three to five years. Spring → Egg hatching → Summer → Rapid growth → Fall → Preparation for spawning → Winter → Spawning under the ice.
The Atlantic tomcod is a social fish, often found in large schools, which contributes to its success during winter fishing. It is not particularly territorial and moves according to food availability. This fish is fairly resilient to light variations but is more active at night. Weather conditions, such as wind and atmospheric pressure, have little immediate effect on its behavior, but it is more active when the weather is stable.
The diet of the Atlantic tomcod varies depending on its age and the season. Young fry primarily feed on zooplankton, while adults consume a variety of benthic invertebrates, such as crustaceans, marine worms, and small fish. In winter, their diet may include more fish due to the reduced availability of invertebrates. Tomcods are opportunistic and can adjust their diet based on what is most easily accessible.
Fishing for Atlantic tomcod is particularly popular in winter when the fish migrate to estuaries to spawn. The best times for fishing are often early in the morning or late in the afternoon, although these fish can be active throughout the day. Overcast weather and snowy days are good times for fishing, as the fish may be more active. In summer, tomcods move to deeper waters and are less accessible for recreational fishing.
Ice fishing is the most popular method for tomcod. Use a short rod and a light line. The best results come with natural baits like worms or pieces of fish. Avoid moving the bait too much, as tomcods are attracted to subtle movements.
A simple technique involving leaving a natural bait like a worm on the bottom, ideal for beginners. Make sure the bait is well secured, as the current can move it. A light rod and thin line are recommended.
Although less common, this technique can be used in open water with light lures. Maintain a slow speed so the lure mimics a small fish in distress. Use a light rod and a sensitive reel.
Practiced from a boat, this method uses the current to move the bait. A natural bait is recommended. Keep an eye on the line tension to detect bites.
For the Atlantic tomcod, natural baits like worms and pieces of fish are the most effective. However, in situations where lures are used, opt for natural colors such as brown, green, or white, which mimic natural prey. In murky water, brighter colors can be experimented with but are generally less effective than natural baits.
For tomcod fishing, a short rod of 24 to 36 inches is ideal, especially for ice fishing. Choose a light action rod to better feel the bites. A light reel equipped with a 4 to 6 lb line is sufficient. Hooks size 8 to 12 are recommended, depending on the bait used. A fluorocarbon leader can improve stealth in clear water.
The Atlantic tomcod is a relatively resilient fish, but gentle handling is essential for a successful release. Use wet hands to avoid damaging the protective mucus on its skin. If you take a photo, do so quickly and return the fish to the water as soon as possible to minimize stress.
Natural predators of the Atlantic tomcod include seabirds like cormorants and seagulls, as well as larger fish like cod and striped bass. Seals may also feed on tomcods when available.
The Atlantic tomcod is not currently considered a threatened species in Quebec. Recreational fishing is subject to regulations that vary by region, and it is important to respect minimum sizes and catch limits. Catch and release is encouraged to preserve local populations, especially during spawning.
No catches yet for this species. Be the first!