Just bought a house that has a concrete pool/pond or something of that nature. When we first viewed the property it was the home of frogs. However, since we are not going to be using it really was thinking of maybe using it for a small fish farm (just for feeding us --family of 4). It's too large to turn into a fire pit LOL We're not big fish eaters either so wouldn't have to be many fish. Mainly just to get some use out of it. I also would like not to have to use a pump or any electricity for it if at all possible.... I have no idea how deep it is--can't see the bottom, but it is a ovalish shape with wide low walls. The picture isn't the best angle.