Didymo Information

By Hastings Deerstalkers' | January 31, 2011

Didymo: The Story So Far Since didymo, or rock snot, was first discovered in the Lower Waiau River of Southland in 2004. It has spread rapidly and is now present in over 150 lakes, rivers and streams throughout the South Island. The freshwater algae forms unsightly mats affecting fish prey species and makes recreational activities…

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