Whitefish
Also called Mountain whitefish, Round whitefish
Whitefish are freshwater fish in the salmon family (Salmonidae) that feed heavily on insects and small invertebrates. They are often caught on nymphs while targeting trout.
- Group
- Grayling & whitefish
- Category
- Species
- Level
- Intermediate
- Water
- Freshwater
Last updated
What Whitefish means
“Whitefish” usually means mountain whitefish in the West, plus several related species in the genus Coregonus in other regions. They are salmonids, closer to trout and grayling than to carp or suckers.
Whitefish spend a lot of time near the bottom and along seams, picking off drifting nymphs, larvae, and small crustaceans. They have small, delicate mouths.
In many trout fisheries, whitefish are a normal part of the catch. They show up in the same runs and slots as trout, especially in colder water and during winter and early spring when insect-driven nymphing is the main program.
Why it matters on the water
A whitefish take can look like a “trout eat” on a nymph rig, a small tick, a pause, or a slow draw. If you treat every contact as real and keep your hook set controlled, you land more trout and you stop guessing which bumps were rocks.
When whitefish are thick, they tell you something about the drift and the food. If you are hooking whitefish consistently in one lane, you are getting your flies to the right depth and speed. From there, small changes in fly size, weight, or where you run the rig can shift those same drifts toward trout.
Read next
- Arctic graylingA freshwater salmonid known for its tall, sail-like dorsal fin and soft, delicate mouth. Grayling live in cold northern waters and feed heavily on drifting insects.
- Euro nymphingA tight-line nymphing method that uses a long rod, a thin leader with a sighter, and weighted nymphs to keep direct contact through the drift.
- MidgeA midge is a small two-winged fly; in fly fishing it often means a chironomid. Most of their larvae and pupae live in water. Midges hatch in every month on many rivers and lakes, and trout eat them year-round.
- NymphA nymph is a subsurface fly meant to imitate an aquatic insect in its immature stage, or a small food item drifting in the current. Nymphs are fished with or without weight, an indicator, or tight-line methods.