CEDAR RAPIDS, Iowa (AP) -

The smell from decomposing fish carcasses is stinking up angling conditions along the Cedar River.

Iowa Natural Resources Department spokesman Joe Wilkinson told Cedar Rapids station KCRG that the fish are gizzard shad and their deaths are normal this time of year.

Some of the carcasses look like the fish just died. Other carcasses have started decomposing and smelling.

Wilkinson says the carcasses that can be seen are just a small percentage of the total. The rest are lying on the river bottom, providing food for catfish and other critters.