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The Arctic grayling, Thymallus arcticus, is a freshwater fish known for its sail-like dorsal fin and iridescent body. Native to cold, clear waters of the Arctic and sub-Arctic regions, it is a popular game fish. Arctic graylings are admired for their beauty and fight on the line, making them a sought-after catch among anglers.
Length
~30" (max 76)
Weight
~1" (max 4)
Water
Fresh
Water Temp
4-23° F
Insects
Mealworms
Salmon eggs-
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Arctic graylings inhabit clear, cold rivers, streams, and lakes, thriving in well-oxygenated waters
They are often found in montane and piedmont streams, where the current is strong and the water is cool
This species prefers environments with rocky substrates and minimal pollution
Their diet primarily consists of surface insects, but they also consume fish eggs, small fish, and crustaceans
Spawning occurs in the spring, with adults moving into tributaries and males establishing territories
Males court females by displaying their dorsal fins and creating slight depressions in the substrate
Eggs are fertilized in these depressions without the construction of a proper nest
After spawning, adults establish territories in upstream pools and most move downstream by mid-September
