Pond opened up with the help of gradual aeration. Now that is opening I am realizing I have a major fish kill. Kicking myself for not aerating but kids ice skate so I did not want to deal with open water.

Lots of 4 to 8 inch bluegill and some bass too.

Many are frozen in the ice in the shallows??

Plowed half the pond so I had incident light through winter.

1/3 acre 10 ft deep at max. Probably averages 6.

So help me understand how this happens so I am better equipped next year.

Pond is in NO Wisconsin