Mark, can I harvest crayfish in Wyoming lakes and rivers?

Crayfishes Missouri Department of Conservation

Getting to Know Invasive Rusty Crayfish

2 Guys and A River - For the love of fly fishing

Tackling a tasty invader: Michigan vs. red swamp crayfish

Where in the West is Mark Spitzer? – UNP blog

DNR seizes record amount of illegal red swamp crayfish

Virile Crayfish - Montana Field Guide

Public asked to watch for rusty crayfish in Laramie River

Game and Fish Asking Public to Keep Eye Out For Rusty Crayfish

Wyoming Fishing Regulations by #1 Properties - Issuu

Invasive Species: Rusty Crayfish

Commercial crayfish harvest in Oregon and Washington as A. lbs

Big Sandy crayfish on endangered species list