Goldfish have a special ability to live under extreme conditions, making them prolific invaders of natural habitats. They are tolerant to low oxygen conditions and can survive water temperatures well below freezing, said the Invasive Species Council of B.C. on their website.

Last week, Alaska became one of at least 32 states to report finding zebra mussels in a product called moss balls which were sold at local pet stores.

A 2008 report by the Canadian Food Inspection Agency said there were at least 486 invasive alien plant species alone in Canada.

The Okanagan Indian Band is advising residents to not enter or consume water from the north arm of Okanagan Lake until further notice due to a toxic algae bloom.