Is there a mouse fly stashed in one of your fly boxes, or maybe buried in an old tackle box filled with stuff granda handed down? Do you ever use it? If you don't, you should, because there is no greater proof that trout eat rodents than this story on LiveScience.com. In the photo we have a wild rainbow trout caught in Alaska's Togiak National Wildlife Refuge that had a stomach filled with 20 shrews. Thing is, the 'bow was only a 19-incher. It's not a small trout, but it's not breaking any records either. According to the story, the most shrews ever found in a trout stomach was seven per local fisheries biologist Mark Lisac.