Footage, filmed in Canada yesterday, of a man explaining how and why goldfish in Beaver Lake in Montreal are dying.
The filmer later wrote online: "The goldfish in Beaver Lake (Montreal Quebec) are dying in record numbers.
"The city does't know why, but it is obvious a lack of oxygen in the water."
"We saved about 15 this weekend (transferred to properly aerated pond) - all creatures great and small," he continued.