Yeah thats crappie hatchlings. Just look at the thumbnail photo you have, that has the smaller and bigger ones together, you can see the speckeling get more prodominate as they grow vs the vertical stripes as the smaller one, and you can see the body shape making the transition as well, the eyes are to big to be gill fish.and the gill speck would also be bigger than what it is. plus its bedding season. so they probably just hatched.