Submitted by mtdave on Tue, 2015-04-21 22:01 Aquatic Invasive Species/ Clean Angling Science Vote Up Down +8 + didymo 2.jpg Didymo is showing up in many new locations and threatening the ecology of our cold water fisheries. Why? This is an excellent article on the current state of didymo research. http://www.hcn.org/issues/47.5/the-case-of-the-snotty-streams