Originally Posted by richierivertrip
Totally agree with Zach. Last time I did the Grand the ranger said to kill every trout I caught. Told her, sorry I was a catch and release guy. The dam is the chubs real problem. Cant blame the trout for trying to survive in an environment which is now perfect for them.
Does the same go for all of the warm water invasive species in the upper basin?
Interestingly enough, the Grand Canyon humpback population is currently fairing far better than the upper basin populations. Possibly due to the trout removals, but perhaps more likely due to slightly warmer water from low Lake Powell levels and the absence of warm water predators like bass.
Humpback chub are a unique and beautiful fish. Rainbow trout are a beautiful fish in their own right, but they are everywhere. Damn near every stream and river in North America has been stocked with rainbow trout, but humpback chub are are only found in a few unique canyons.
I support the management of invasive species, even if the species in question is one that some people value for recreation.
Large dams are certainly one of the biggest factors contributing to the decline in Colorado River fishes, but these fishes were in serious decline before the dams were built. Introduced species and water quality (selenium) are widely hypothesized to be the causes of the initial declines.
I simply do not understand the logic that because the removal of large dams on the Colorado River is currently unfeasable that we should abandon attempts at mitigating other significant factors that impact the ecosystem.