Donald,
You will have to make up your mind if you want the fish or the money. Frac takes a lot of water and unless you have a big/deep pond it won't do it. What state are you in? I have sold water for .25 to .35 bbl in Oklahoma. The pond was 35 feet deep and about 2 1/2 A, it was almost dry when they finished. I move all the fish I could to a smaller pond. The pond did have a spring in it, so it came back within a week. I would not plan on filling it from a well. Be sure to get an oil & gas attorney to write the contract. DO Not use the oil companies contract.