I never got a photo, no. But I did get a baseball cap! And a gold medal, which I destroyed (so sad). And if you get all the fish, yes, you get a golden fishing pole. Not that you need one once you've got all the fish, but it's still sparkly!
You can destroy it - I also destroyed it, accidentally. If you find it in your inventory, then choose to inspect it, Claire notices it's actually a gold coin attached to string (or something), and you can choose to take it apart (destroying the medal and giving you 1 coin) or keep it. I wish I hadn't destroyed it, but maybe you won't :D