I love seeing fish teeth in pictures, but they can be hard to capture. Here's one of my yellow tail Acei showing what I think are teeth, can't imagine what else they'd be!
My l. boulengeri had the biggest teeth on a 3" fish I've ever seen. Sometimes I'd get bit while cleaning the tank, and could actually see the holes in my hand/fingers.
My Jack Dempsey has some pretty nasty teeth, but I am not sure if I can get a pic though. I have gotten bit by him during a water change and the teeth are a lot sharper that I had thought.