Fish Kills

WHAT IS A FISH KILL? An event where large numbers of fish die, indicating a problem in the body of water. Fish kills can be caused by a variety of factors including dissolved oxygen depletion, extreme water temperatures, fish diseases, or the introduction of pollutants. Most fish kills are natural events. Please review the topics below to help you to understand why fish kills happen.

• Winter Fish Kills and the Facts
• MDNR Fish Kills
• What Causes Fish Kills?
• Understanding Fish Kills
• Field Manual for Investigating Fish Kills