are these leeches? every single freshwater drum we've caught has had these in the gills : r/Fishing

Science of the Seasons: Leeches eke a living on fish

Freshwater drum - Wikipedia

Wtf is this : r/Fishing

Chicago fishing: 'Summer time is catfish time' - Chicago Sun-Times

FRESHWATER LEECHES GROSS ME OUT BUT THEIR FLIES CATCH FISH

What is your most reliable bait and method for catching pan fish? - Quora

BOATING GUIDE

2024 Fishing Regulation Brochure

A COLORADO FLYFISHERMAN GOES SALTY – Jim Cannon Explores Florida's Fresh and Saltwater Fishing

Fish Identification Department Of Natural Resources Division