The redhorse is a freshwater fish from Quebec, often underestimated by sport fishermen due to its low fighting ability. However, it is quite widespread and can provide interesting fishing sessions, especially for beginners or family fishing enthusiasts. Its distribution mainly extends through the rivers and lakes of northern Quebec, where it is often fished for fun or used as bait for other species. Although it is not a fierce fighter, it attracts attention due to its availability and ability to survive in murkier waters.

The redhorse has an elongated, streamlined body, adapted for life in currents. Its color ranges from gray to brown, with reddish reflections on the flanks and belly, hence its name. The scales are medium-sized, well-aligned, and its skin is often slimy. Its inferior mouth, typical of fish in the Catostomidae family, is well-suited for sucking food off the bottom. The fins are generally clear, with a pinkish hue on the pectoral and pelvic fins. The tail is slightly forked. Young redhorses are often paler than adults and have more pronounced bands on their bodies. During spawning season, males may display brighter colors, with accentuated red tones.

The redhorse is widely distributed in northern Quebec, particularly in the rivers and lakes of the Laurentians, Abitibi-Témiscamingue, and Saguenay–Lac-Saint-Jean regions. It prefers cool, well-oxygenated waters, although it can tolerate somewhat more extreme conditions, such as murkier waters. It is rarely found in southern Quebec, where it is often replaced by other species of redhorses.

The redhorse primarily frequents rivers and lakes with cool, well-oxygenated waters. It prefers sandy or gravelly bottoms where it can easily forage for food. It is often found in shallow waters, between 1 and 3 meters deep, but can go deeper if conditions require it. In summer, it seeks shaded areas to avoid excessively high temperatures. It is also common to find it near natural structures like rocks or submerged logs, where it finds protection and food.

The life cycle of the redhorse begins in spring when the water temperature reaches about 10 °C. This is when they start their migration to spawning areas, usually in shallow, well-oxygenated waters. Females lay thousands of adhesive eggs that cling to rocky or sandy substrates. The eggs hatch in one to two weeks, depending on the temperature. The fry feed on zooplankton before switching to a more varied diet as they grow. They reach sexual maturity around 3 to 4 years of age and can live up to 8 years under optimal conditions. Spring → Spawning → Summer → Growth → Autumn → Winter preparation → Winter → Slowed life.

The redhorse is a social fish, often observed in small groups, especially during the spawning season. It is not particularly territorial and often shares its habitat with other fish species. It is relatively indifferent to noise and movement but prefers low-light conditions, making it more active at dawn and dusk. During sudden weather changes, like a cold front, its activity may decrease.

The diet of the redhorse is primarily benthic. Young fish mainly feed on zooplankton and small aquatic invertebrates. As they grow, they broaden their diet to include aquatic insects, crustaceans, and organic debris. They use their inferior mouth to forage the bottom, sucking in food and filtering it with their gills. Their diet varies little with the seasons, although they may consume more decaying organic matter in autumn.

The redhorse is active year-round, but the best times to fish for it are spring and autumn when water temperatures are more favorable. In spring, just after spawning, they are often more concentrated and less wary. In summer, they prefer the cool hours of the morning and evening, taking refuge in the shade during the hottest periods. In autumn, they prepare for winter by increasing their feeding activity. During winter, they slow down their metabolism but remain accessible through ice fishing, although they are less active.

To fish for the redhorse, favor natural lures in brown, green, or reddish colors to mimic insects and small crustaceans. In clear water, natural tones work well, while in murky water, brighter colors can help attract attention. The lures should be small and unobtrusive, as the redhorse is not an aggressive predator.

A light, fast-action rod, about 6 to 7 feet long, is ideal for feeling the subtle bites of the redhorse. A light reel, spooled with 4 to 6 lb line, is more than sufficient. Small hooks, between #6 and #10, are recommended to fit their small mouth. A fluorocarbon leader can be useful to prevent them from becoming wary.

The redhorse is a robust fish, but it should be handled carefully to avoid causing it stress. Use wet hands to hold it and minimize the time out of water. If you wish to release it, ensure it is well-oxygenated before letting it go. For photos, support it gently under the belly.

Young redhorses are often preyed upon by larger fish such as pike and yellow perch. Aquatic birds, such as herons and ospreys, may also target adults in shallow waters.

The redhorse is not considered an endangered species in Quebec. It is generally abundant in its natural habitat. Fishing regulations often allow its capture without specific restrictions, but catch and release is encouraged to maintain healthy populations.