Home Regional Offices Laramie Region Laramie Region News Finding Treasure At Treasure Island Finding treasure at Treasure Island Posted: August 28, 2018 | Laramie Region News News Biologists captured more than 2,000 brown and rainbow trout during three days of sampling. Even better, the fish are big. The largest fish caught was a 22.3-inch brown trout. Previous View All News Next Want the latest updates? Sign up to get the latest news and events sent directly to your inbox. Subscribe to our email list