The Flycatcher is an psi anomaly introduced in S.T.A.L.K.E.R. 2: Heart of Chornobyl.
General characteristics
The Flycatcher is a psi anomaly that slows down any object or projectile that enters it. It's difficult to spot, but it can be identified by the blurred and "glitchy" visuals around it, similar to Psy-emissions from the original trilogy. It is harmless to the player, but can be inconvenient during firefights.
Locations
Flycatchers can be found in all regions except the Lesser Zone. They spawn in loose clusters by other anomalies or by themselves.