I remember visiting a fish hatchery when I was young.
It is my understanding that fishing license revenue supports fish reproduction.
These “fish” being “protected” by flushing fresh irrigation water into the brackish tidal waters of the delta are NOT fish farm young but are an invasive species to the delta. The lying claim that this species would be harmed if extra irrigation water is used for people or plants is shown by the simple fact that, in earlier years BEFORE rice farms and fields were irrigated, the natural delta water would vary far, far more every summer. With no fish kills.