ST. CLAIR SHORES, Mich. -- The mystery as to why thousands of fish are dying in Lake St. Clair has been solved.

Preliminary tests on the fish found dead along 7 Mile to 11 Mile roads in St. Clair Sores indicates the fish died from a common bacteria known as flavobacterium colimnare infection, according to the Michigan Department of Natural Resources.

Several thousand of dead and rotten fish including, small mouth bass, muskie, walleye, perch and bass have been tuning up in resident's boat wells.

The bacteria causes death when fish are stressed during the spawning season, said DNR Fish Production Manager Gary Whelan.

Whelan added that the fish kill is not a public health concern.

Lake St. Clair has seen its share of fish kills. In 2006, thousands of fish died from viral hemorrhagic septicemia, which is a disease that is comparable to the Ebola virus for fish.

In 2000, state officials attributed two large fish kills to the chlorine that was used in a wastewater treatment plant.