My tadpole isn't EATING?!

[happymelonday_]

I retrieved a baby tadpole from a lake, it had a broken tail. I've had it for about 3 days now and it won't eat! I got it into a proper tank yesterday with gravel from the petstore (I rinsed it before putting it inside the tank) I moved my tadpole in yesterday, the water is still cold, should I get a lamp? Anyways, I bought frog and tadpole food at the store and the tadpole isn't eating! Please help, I'm worried he's going to die!!!

 

[CAPSLOCK]

How cold is the lake? You'd want to roughly match the temp that he would naturally grow up in.

I found this link: http://www.wikihow.com/Raise-Tadpoles