What Killed the Fish?Purdue University Extension has put together an outstanding reference to guide yourself through a fish kill. This reference will allow you to narrow down the cause of your fish kill, but only if you are reacting immediately to the kill. Getting out to the site while the fish are dying or at minimal, within hours of it happening is crucial. Please take a moment and refer to these materials to educate yourself in what to look for when arriving at a recent fish kill.