The black sucker, or White Sucker in English, is a species of freshwater fish widely distributed in Quebec. Although often overlooked by sport fishermen due to its low fighting ability, it plays an important ecological role in aquatic ecosystems. It is found in a variety of environments, from rivers to lakes, and is particularly valued for its ability to survive in turbid waters. Its distribution is extensive across Quebec, and it is often caught by anglers targeting other species, as it shares the same habitats as several more sought-after sport fish.

The black sucker has an elongated, fusiform body covered with large cycloid scales. Its color varies from olive brown to dark gray on the back, with lighter sides and a whitish belly. The mouth is inferior, typical of bottom-dwelling fish, and equipped with fleshy lips adapted for suction. The fins are generally grayish to brownish, with pelvic and anal fins slightly tinged with red in some individuals. The tail is slightly forked. Young black suckers often display dark longitudinal stripes that fade with age. During the spawning season, males develop nuptial tubercles on the head and pectoral fins, distinguishing them from females.

The black sucker is present in most regions of Quebec, from Outaouais to Gaspésie, passing through Laurentides and Saguenay–Lac-Saint-Jean. It is abundant in the watersheds of the Saint Lawrence, Outaouais, and Saguenay rivers. It is found in a variety of water bodies, including slow-flowing rivers and shallow lakes. Due to its tolerance for a wide range of environmental conditions, it is often found in habitats where other fish species cannot survive.

The black sucker prefers freshwater and turbid waters, often rich in nutrients. It is frequently found in slow-moving rivers, shallow lakes, and ponds. It favors sandy or muddy bottoms where it can easily forage for food. Areas rich in aquatic vegetation are also favored, as they provide an abundance of food and shelter from predators. The black sucker is capable of living in a wide range of temperatures, but it prefers moderately cool waters, around 12 to 20 °C. During warmer months, it may seek refuge in deeper or shaded areas to avoid excessive temperatures.

Spawning for the black sucker occurs in spring, typically between April and June, when water temperatures reach around 10 to 15 °C. Males and females migrate to shallow spawning areas, often upstream in rivers or in the shallow bays of lakes. Eggs are laid on rocky or sandy substrates, without nest building. A female can lay up to 100,000 eggs, which hatch in about a week. Fry grow quickly, reaching sexual maturity around 3 to 4 years of age. The black sucker can live up to 10 years, although it is more commonly encountered in the 5 to 7 year range.

Spring → Spawning → Summer → Rapid growth → Fall → Winter preparation → Winter → Slowed metabolism

The black sucker is a social fish, often observed in schools, especially during the spawning season. It is not territorial and moves freely in search of food. Black suckers are quite tolerant of noise and human disturbances, but they may be more active in cloudy or rainy weather when light is diffuse. During the day, they prefer to stay near the bottom, sheltered from predators. Their feeding habits lead them to forage the substrate, making them less sensitive to changes in atmospheric pressure.

The diet of the black sucker primarily consists of organic matter found on the bottom of water bodies. Fry mainly feed on zooplankton and microorganisms. As they grow, their diet expands to include aquatic insects, larvae, crustaceans, and plant debris. Adults spend a lot of time foraging the bottom for worms, mollusks, and small shrimp. This varied diet allows them to adapt to seasonal changes in food resource availability.

The black sucker is active year-round, but its feeding habits and movements vary with the seasons. In spring, it migrates to spawning areas and actively feeds to regain energy after winter. In summer, it moves to deeper or shaded waters to avoid high temperatures but remains active at dawn and dusk. Fall is a time of high feeding activity as it builds up reserves for winter. During winter, its metabolism slows down and it remains mostly inactive, feeding little. The best times to fish for it are early morning or late afternoon, especially in overcast or rainy weather. Light winds and stable atmospheric pressure also enhance its activity.

Although black suckers are not particularly attracted to lures, you can try small spoons or jigs in natural colors like brown, green, or black, which mimic bottom prey. In clear water, favor subtle colors. In turbid water, opt for brighter or metallic shades to catch their attention. Small-sized lures are often more effective for this species, which primarily feeds on small prey.

To fish for the black sucker, a light to medium rod about 6 to 7 feet long is ideal, with a moderate action to better feel subtle bites. A spinning reel or light casting reel loaded with 6 to 10 lb monofilament line works perfectly. Use hooks size 6 to 10, suitable for the size of the bait. A fluorocarbon leader can be useful for its invisibility in the water.

Handle the black sucker carefully to avoid removing its protective mucus. Use wet hands or a damp cloth. If you wish to release it, do so quickly to minimize stress. For a photo, hold the fish horizontally, supporting its belly. Ensure it is well oxygenated before releasing it.

Natural predators of the black sucker include carnivorous fish like pike and muskellunge, as well as some aquatic birds such as herons and ospreys. Young black suckers are particularly vulnerable to aquatic predators due to their small size.

The black sucker is not a threatened species in Quebec. Its population is stable, and it plays an important role in the aquatic ecosystem by contributing to the health of river and lake bottoms. There are no specific regulations for its fishing, but it is always wise to release it to maintain ecological balance.