Need some advice on a weird situation, yesterday after the last of ice thawed I noticed catfish floating on the surface. I guess I lost 10 cats. Upon further investigation we found dead tad poles about 3/4 inch long and lots of smaller blue gill and bass dead in the leaves on bottom. I am asking myself why would there be tad poles this time of year and such small fish. Almost like they had a hatch in the fall and froze in. I am boggled. Any insight?