What is golden alga and how does it kill fish?
The golden alga, Prymnesium parvum, is a tiny, one-celled aquatic organism about the size of a human blood cell. The alga is motile with two “tails” called flagella that help it to move through the water in lakes and ponds. A single drop of lake water may contain well over 2,000 cells of golden alga. Biologists suspect that golden alga is relatively new to Arizona and they consider it a nuisance invasive species.