Wow, there are some nice Gills in there that would stand to be lost! From Cannel 16 WNDU: DNR plans chemical fish kill [ Watch Broadband Video ] Story filed by NewsCenter16 Reporter Judi Lykowski St. Joseph County, IN - A chemical fish kill at Potato Creek State Park is raising eyebrows. But the Indiana Department of Natural Resources says it's necessary to control an invasive species of fish in a lake A fishy situation Worster Lake located in Potato Creek State Park is native to many species of fish, but until recently not the gizzard shad. "We think somebody brought them in intentionally,” said Bob Robertson, DNR. And ever since 1990, the DNR has spent thousands of dollars trying to fight their presence. "It's had a big impact on the fishery, the blue gill fishing had declined a lot in a short period of time and we think it's due to the gizzard shad,” said Robertson. Robertson is the district fishery biologist and says recent counts show the gizzard shad is one of the highest populated in the 327-acre lake. So this summer the DNR is planning a chemical kill. "We are talking about using only 2/10th of a part per million, when often the chemical is used at four part per million,” explained Robertson. The chemical is called rotenoneand has been used before on this lake for the same purpose. "There may be a very few game fish compared to the gizzard Shad fish that will die,” said Robertson. But that concerns one veterinarian; she proposes another idea. "They will not get rid of them, live with them, that's the answer, live with them,” said Dr. Diane Williams. "For everyone who is concerned with each and every fish, we are too. But we think this is a matter of sacrificing a few for the benefit of sacrificing them all basically,” said Robertson. The DNR says the only way to completely get rid of the fish is to drain the lake. They say using the chemicals is a way to keep the population down without killing all of the other species.