crazyrainbow fly fishing, Casper Wyoming


  • The Grey Reef is at 2,500 CFS.
  • The Miracle Mile is at 2,300 CFS
  • Fremont Canyon is at 200 CFS

Hello Everyone!

May has certainly started off with a bang as things have opened up for Wyoming. All areas are fishing very well. With the flows being higher on the Reef and Mile, be sure to be a little more cautious when wading, the currents can be stronger than they look. We are starting to see a BWO’s coming off in the mornings along with plenty of midges. Rock worms and San Juans are always fishing well including all the popular midge patterns!


Recommended Flies:

  • Midges ( MacGruber, Mayhem) #18-20
  • RS2 #18-20 (Chocolate, Gray)
  • Rock Worm #14-18
  • San Juan Worm (Red)
  • Scuds (Orange and Yellow)
  • Squirrel Leeches #10-14
  • Juan’s Slim Shady (Olive ) #20-#18
  • Barr’s Flashback Emerger BWO #18

Streamer Fishing:

Recommended Streamers:

  • Rusty Trombone #4-8
  • Articulated Goldie #4
  • Articulated Ditch Witch Tan, Olive
  • Nameless Wonder
  • Thin Mint Bugger
  • Nameless Wonder


Here at the Ugly Bug we are excited to be your go to fly shop and guide service in Casper, Wyoming. With all this craziness going on in the world we are still OPEN and proud to be able to take care of all your fly fishing needs. We have expansive online store featuring free shipping of orders over $50.00 and same day shipping when ordered Monday-Friday  before 3:00pm mountain time.


Got some fish pics you would like to share? Shoot them to us in an email to!



Fly fishing quote of the week:

“There’s a fine line between fishing and standing on the shore like an idiot.” -Steven Wright