The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large Brown Trout that only touch streamers for the rest of the year.
Preferred waters: All types, but especially abundant in alkaline spring creeks.
Altitude: From near sea level on some West Coast tailwaters to as high as 8,000 ft.
Time of day: Usually morning and often again near dusk
Habitat: Riffles are preferred in freestone environments. Spring creek dwellers prefer specific locations determined by a variety of factors.
Diet: Detritus, algae
Current speed: Can be found in all current speeds, but especially near vegetation.
Substrate: Gravel, sand, vegetation