Tom W, Crappie are a boom/bust spawner with each female laying about a quarter million eggs. In small waters (under 50+ acres), a boom hatch leaves you with literally millions of fry that have nothing to eat, so they stunt at a couple inches.
If you REALLY want Crappie, Hybrid Black Crappie can be MUCH more easily controlled by largemouth bass.
The tadpoles are likely American Toad, tadpoles. They are toxic to most fish, so won't get eaten or provide a food source.
