Arctic Char Identification Guide
How to recognize an Arctic char by its pale spots on a dark body and white-edged lower fins.
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Key identification features
- Char-family body with light-colored spots (pink, cream, or pale yellow) scattered on a darker body - the reverse of trout, which show dark spots on a pale body
- No spots on the dorsal fin
- White leading edges on the pectoral, pelvic, and anal fins
- Coloration ranges from bright silver in sea-run fish to olive-brown with a brilliant orange or red belly in spawning adults
- Deeply forked tail, more so than brook trout
Common look-alikes
- Brook trout: shows wavy, worm-like vermiculations across the back, which Arctic char completely lacks
- Dolly Varden: nearly identical in pattern; Arctic char typically shows fewer, larger, more evenly round pale spots and a deeper tail fork, though range is the most reliable distinguishing factor since the two rarely overlap
- Lake trout: has pale spots too, but on a much less deeply forked tail and a more mottled, less contrasted body
Where you'll see one
Arctic char inhabit cold lakes, rivers, and coastal seas across the circumpolar Arctic, including northern Canada, Alaska, Scandinavia, Iceland, and Siberia, with both landlocked and sea-run populations.
Frequently asked questions
How do I tell Arctic char from brook trout?
Check the back for vermiculations - brook trout has wavy, worm-like markings, while Arctic char's back is plain aside from pale round spots.
How can I distinguish Arctic char from Dolly Varden?
The two look very similar; Arctic char tends to have fewer, larger, rounder pale spots and a deeper forked tail, but range is usually the most dependable clue since they rarely share the same waters.