This topic reminded me of a conversation I had with a Nebraska biologist about this very subject. Here's what he said.
"I ain't saying that fish will not eat them, but I don't think they like them very much."
Shorty also chimed in.
"Certain types of tadpoles DO leave a bad taste in a fishes mouth and fish DO learn to avoid certain types of tadpoles. If you are going to use tadpoles for bait you need to be selective."
