Northern Sunfish
The Northern Sunfish is a small, brilliantly coloured sunfish native to Ontario's Great Lakes and Upper St. Lawrence River system. Rarely targeted deliberately, it's most often encountered by anglers fishing for other panfish.
Its conservation status under Canada's Species at Risk Act makes it a fish to identify carefully, handle gently, and release.
Scientific Name: Lepomis peltastes
Also known as crapet du Nord
- Very thin, laterally compressed body about 13 cm long — smaller than most sunfish anglers handle regularly; females can run slightly larger than males.
- Olive base colour with bright red and blue patterned scales along the sides; belly is vivid yellow; fins carry matching red and blue colouring.
- Easily confused with Longear Sunfish and Pumpkinseed — only close inspection of scale and fin details separates them reliably in hand.
What to know
Habitat Distribution
- Native to Canada; range is restricted to Ontario, within the Great Lakes basin and the Upper St. Lawrence River drainage.
- Also connected to the Hudson Bay drainage in southern Ontario; populations are scattered and not continuous across the range.
- Found in clear, warm, slow-moving or still water — rivers, streams, and lake margins with clean sand or gravel bottoms and aquatic vegetation.
- Populations have declined significantly; the species is no longer detectable in some areas where it was previously documented.
Key Locations
- Great Lakes basin, Ontario — the core of the Canadian range, though populations are scattered and not reliably present everywhere.
- Upper St. Lawrence River drainage, Ontario — the other documented population cluster covered under the federal management plan.
- Hudson Bay drainage tributaries in southern Ontario — peripheral range; populations here are sparse.
Specific Spots
- Shallow, vegetated margins of warm rivers and lake bays — the fish picks insects off plant stems and the water surface, so weed edges are the place to look.
- Sand and gravel flats in slow current or sheltered coves, where males build and guard nests during the spawning season.
- Areas with clean substrate and minimal silt — runoff and agricultural erosion degrade the habitat this species depends on, so cleaner tributary sections hold more fish.
Northern Sunfish FAQ
Answers from onWater's species guide.
What are the best lures and bait for Northern Sunfish?
Tiny jigs (1/32 oz or lighter) tipped with a small piece of worm or a micro soft-plastic; keep presentations slow and close to vegetation. Small live or wax worms on a light hook fished under a small float, a classic panfish rig scaled down to match the fish's small mouth.
What flies work for Northern Sunfish?
Small dry flies imitating adult mayflies or midges, an Elk Hair Caddis or a simple parachute Adams in size 14–18 covers most surface feeding situations.
When is the best time to fish for Northern Sunfish?
Late spring through summer, the fish is most active and accessible in warm water; spawning activity in June–July concentrates fish in shallow, sandy areas. Fall fishing slows as water cools; the species is not typically targeted through ice.
How do you catch Northern Sunfish?
Most anglers encounter Northern Sunfish incidentally while fishing for other panfish species in warm Ontario waters. Given its Special Concern status, the appropriate approach is careful identification, minimal handling, and immediate release.
What do Northern Sunfish eat?
Primarily aquatic insects at all life stages, picks both larvae and adults off vegetation and the water surface; small nymphs and dry flies imitating midges or mayflies match this feeding closely.
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