FURUNCULOSIS again in our trout!!

Went fishing today and caught a bunch...One in particular looked like either an animal had it's way or IDK, anyone wanna give it a guess, some kinda creases on the side by the gills and back from there.........Is this furunculosis?.....I didn't keep any fish(and prob won't until the spring if any), but the fish was healthy and swam off no problem....ended up w/ 7 total....water was chocolate milk and flowing heavy which made it tough....