Toxins causing which specific biological hazard, fatal to birds and fish, can be carried by Zebra Mussels consumed by Round Gobies?

Answer

Botulism Type E

A specific biological hazard noted is that Zebra Mussels can carry toxins causing Botulism Type E, which can be fatal to birds and fish that consume the contaminated gobies.

Toxins causing which specific biological hazard, fatal to birds and fish, can be carried by Zebra Mussels consumed by Round Gobies?
foodhumanEdibilityfishgoby