I think they would have a hard time baiting the hook and holding onto the reel.

But seriously, even though live fish aren't my thing (I don't trust that they are parasite-free or free of other harmful stuff) I see people on youtube do it all the time with their checkered garters. They just put live fish in the water and the snakes fish them out. The thing is, you don't want substrate sticking to it and getting swallowed.