Fisheries biologists have been trying to help endangered Chinook salmon in the Sacramento River for a few years now. But last year, after a horrible rise in summer water temperatures, about 95 percent of those fish that had been stocked were killed.
Hopes are that the stocking efforts this year will have better results. Early this week, biologists with the U.S. Fish and Wildlife Service released about 400,000 fingerlings into the river — that’s twice what the Service typically puts in.
Releasing more of the fish may help to make up for some of the salmon that were lost last year, biologists say. They add that they don’t think there’s a risk of the fish going extinct, despite the fish’s low numbers.