I have been bully mouth fishing many times, don't want to discourage you but Vegas is 2 and I still have too!!! So far no problems with passing things, some things I had no idea that he even ate. Never ending with these children!!
Brutus is 13 months and the same way. He has eaten everything from rocks, sticks, plants, cardboard, part of a bra , an area rug and even the bottom of his crate. Nothing ever got stuck and it always passed...I think he will be fine Just make sure he's eating and drinking normally