State biologists are investigating what appears to be a fish kill in Silver Lake near Manitowoc.The investigation began on Tuesday after an ice fisherman reported seeing no fish on his electronic fish finder. He also said minnow s that he dropped into the water for bait were coming up dead.Specialists from the Wisconsin DNR say they drilled a dozen holes in the ice and found "very low levels of oxygen" in the water.They then used an underwater camera and discovered dead panfish at the bottom of the lake.Lakeshore neighborhood reporter Abbey Hamachek is at the lake and will have a full report on NBC 26 at 5 6. ...read more read less