There's a lot I could say about that fish but to the important question: are you river fishing? I've always wanted to do that but never have, all of my fishing has been either Great Lakes or inland lakes except for two days a long time ago in the Pacific and I was way out of my element there. If you are fishing a river what bait are you using? I use worms but I think the current in a river might render them useless.
By the way, I hope your son enjoyed catching that trout...