Aqui,
We have a fish pond here, with goldfish and black ones, not a fish admiror, so that's all I can say about them! However, just a couple of weeks ago, apologies Margaret please, at the moment can't think of another word!, had loads of noisy, croaking, bonking frogs!
And yes, we put fish food in the pond. However, if you saw the size of the pond, which is only about 5' x 8', you would not worry about feeding the frogs! They are there because the environment is right for them. Now, even at about 7am, the frogs and tads are very quiet. Remember, they were there before you were, they know how to survive, the fact that they breed there is your contribution!
However, there is lots of shelter for them around the pond and easy steps up to the bog garden and beyond.
Have fun!