The white Amurs (grass carp) have cleaned up the vegetation in the lake exceedingly well. This has been great for the trout fishery as there is still enough vegetation to allow habitat for aquatic organisms that trout eat, but really BAD for the warm water species in the lake. The reason Bass, perch, etc have suffered badly is that there is not enough vegetation for the fry to hide in and survive to reach adult size. No adult recruitment means a lost fishery. Since I love stillwater trout fishing this makes me happy, but the bass guys that always loved Devils lake are sadly dissapointed!