Just caught a LMB this evening and it had a coupld of small light green parasites on it's belley close to it's gills. How do I get these tested and how do I get ride of them? How do they harm the fish? I have caught over 50 fish in the last month and this is the first one with the little buggers. It has been hot here in Oklahoma, 95 to 98 degrees, so maybe the heat has hatched them out. We have had a couple of nice rains but my pond is still 3 feet below normal pool.