Mother Nature's cycles are up and down. If there are "too many" fish, the smolts won't have enough to eat and die, fish ducks eat well and have more young, they eat more fish. Pretty soon there aren't many smolts, which mean more food, less predation. The cycle starts over.
Fishhead5
It is not illegal to deplete a fishery by management.
Limit all U.S. politicians to two terms:
One in office and one in prison!