A female steelhead digs her redd in Arroyo Creek. You can identify the fish as a steelhead from the all-white mouth, radiating pattern of small spots on the upper and lower lobes of the tail fin, circular spots along the top of the body, grey/silver neutral color body, with light pink cheeks and some pink coloration along their lateral sides. Steelhead spawning in the Lagunitas Watershed typically peaks in February and continues through April.