Dr. Jamie Downes:

The profile of this fish kill is that a large number of fish were killed all at the one time and that is indicative of something generally being environmental. Also, while we saw pictures of the fish kill first, the initial impression was that it was environmental and not something that we would see from a disease situation.

To be fair, the IFI did offer to deliver fish to us but we need live or moribund fish in terms of disease in order to get the best sample.