They occur in walleye. To an undiscerning eye, they look like a cancerous tumour on the walleye, but they come every spring. What happens is—one's a bacterial infection and one's a viral infection—as the walleye spawn in the spring, they come in close contact with each other, they get these tumour-looking things on the sides of their bodies, and by the fall they're all gone.
When I was talking to some of the fishermen when we were up at Fort Chipewyan, they confirmed the presence of this. I asked them what the abnormality rate was of the fish, and they said one in one hundred. Well, in my experience as a fisheries technician for years for Alberta Fish and Wildlife, whether it was through netting or whatever the case may be, it wasn't uncommon to find fish anywhere in the province of Alberta with deformities. Particularly, it's not uncommon to find them with any of these other bacterial or viral infections as well.
Did you want to comment on any of that?