I agree here is a redtailI think this should be stickied if some arrangements are done and more fishskull pics are collected here.
Guess what, it is also a great reminder for guests or people who do want to poke their fingers at your fish... Just post a pic of your fish's skull near the tank set up or wall. I think it's a fair warning not to mess with your fish. OR THE ONE WHO KEEPS THE FISH.