Thanks again for the replies. The article linked below pretty well describes our issue. The tshad are grossly overpopulated. If I go out before daylight on a summer morning, like every square yard of the water surface has shad in it. They are far out-competing LMB and BG fry for zooplankton. I do keep the pond well-fertilized. We've had very poor LMB, BG, and RES spawns ever since the shad were introduced.

Back to my original question, should I expect a big project removing shad carcasses or do you guys think it will not be a big issue?

http://fishing.about.com/od/fishfacts/a/shad_2.htm

Thanks.

Indecision may or may not be my problem.