This piece was originally published in Yale Environment 360 and appears here as part of our Climate Desk collaboration. “Thousands of sea lamprey are passed upstream [on the Connecticut River] each year. This is a predator that wiped out the Great Lakes lake-trout fishery. [Lampreys] literally suck the life out of their host fish, namely small-scale fish such as trout and salmon. The fish ladders ought to be used to diminish the lamprey.” So editorialized the Lawrence (Massachusetts) Eagle-Tribune on December 15, 2002. If that’s true, why this spring is…