Monitoring Health and Growth of Net Pen Coho

Each month Squaxin NR staff takes samples of coho from the net pens to monitor growth progress and fish pathology.   We select pens that are representative of the stocks we have and then seine a random sample of these pens.

All photos above taken by Sarah Zaniewski

The sample is weighed and one hundred of them are measured.   Eight fish are taken from this sample as lethal samples to be looked at by Northwest Indian Fish Commission Fish Pathologists.