Round valley report and question...

[Deepdeckhand]

Fished the Valley on Monday. Got set up with some 6-10 ft traps looking for rainbows and browns and some deeep for lakers. Was 5 guys with spread of death looking for lakers in the middle. They ended up with one flag and a 25 in laker and I caught a nice rainbow shallow on our only non wind flag. When I cleaned the rainbow it was stuffed with what looked to be flea like crustaceans. They were so small I had to pull out the kiddy microscope to get a better look. Does anybody know what these are. I'm sure it has something to do with why rv trout taste Awsome! Makes me think if trout are eating things I can barely see I need lighter leaders to fish there ..6lb floro here I come....