: Missouri River: A bug just a small and hard to see are hatching each morning. These would be the Psuedos, they are a tiny Mayfly. Usually it is best to pair these up with a stimulator that's mainly used as an indicator fly. Just like using a Trico, fishing Psuedos can be tough at times but can also be lights out. If your running a nymph rig you want to have some large sized caddis nymphs and soft hackles to try to match the October Caddis. These haven't started to hatch yet but they will soon and the nymphs will be active in the bottom. Even though we have had some cold night lately the hopper and ant fishing is holding on still. Only a few anglers have been streamer fishing but September is the month that this method of flyfishing will become more and more successful.