If they are black and small then they are toad tadpoles. (Not alot of meat on them little suckas) If they are big and green, then they are bullfrog tadpoles. Most toad tadpoles will grow legs fairly quickly and be gone. Bullfrog tadpoles are a different story. I have had some in my pond for more than a year before they grew legs. I am no expert on them, but they are very hardy. They have been around when my pond was full to when it was just a little mud hole. You could go out and scoop them up by the buckets full. I was afraid my pond would completely dry up and leave them in the mud to die, but mother nature gave them another pond. I plan on stocking largemouth bass in my pond, so that will limit my tadpoles, but you don't want nothing eating your goldfish. Either catch them with a net and thin them out or wait them out.
