Is there a local connection to this mystery? Perhaps! The Fraser river is one of the largest salmon producing rivers in the world, although there are many stocks where there is mounting conservation concern. The reasons for the declines are myriad and complex, although an area identified and studied in some detail is freshwater quality. This is something those of us living in the lower mainland need to be aware of. One of the many visual reminders in place are storm drain markers such as painted yellow fish - a reminder that these drains lead to fish habitat, and to keep garbage and chemicals out. Look for them here at the Aquarium, around Stanley Park, and around local homes and businesses.