Flathead Chub

Habitat Distribution

• Native to central Canada — first described from the Saskatchewan River in 1836; also present in the Mackenzie River drainage, reaching as far north as the Northwest Territories and Yukon.
• A plains and foothill river fish: lives in large, turbid, fast-flowing rivers with sandy or gravelly bottoms rather than clear lakes or small creeks.
• In Alberta, found in the South Saskatchewan, North Saskatchewan, and Peace river systems; in Saskatchewan, present in the main-stem Saskatchewan and its larger tributaries.
• Common and secure across the northern part of its range; considered an indicator of intact, free-flowing prairie river habitat.

Key Locations

• South Saskatchewan River, Alberta/Saskatchewan — large, turbid prairie river with strong flathead chub populations in fast, sandy reaches.
• North Saskatchewan River, Alberta — another major plains river where chubs are regularly encountered by anglers fishing for walleye and pike.
• Peace River, Alberta/BC border region — part of the Mackenzie drainage where flathead chubs reach the northern edge of their core range.
• Mackenzie River system, Northwest Territories — the species extends into subarctic drainages here, near the northern limit of its range.

Specific Spots

• Shallow, fast riffles and runs with sandy or fine-gravel substrate — the sickle-shaped pectoral fins are built to hold position in current, and that's where these fish feed.
• Inside bends and current seams where fast water slows slightly; chubs use the softer water as a staging area without straying far from the main current.
• Near cut banks and gravel bars in large prairie rivers — structure that breaks the main flow concentrates both the chubs and the invertebrates they eat.