The Delta Stewardship council has called into question longterm viability of some fish species. Recent studies have shown that smelt and certain runs of salmon may not be viable in the long term. The itty bitty smelt is not a commercial catch, but it is considered a bellweather species indicating the general health of the state's most important water system, and it's played a key role in determining how much water is disbursed to California cities and farms. As Peter Jon Shuler reports, three San Joaquin Valley farmers are challenging the federal government's right to use the Endangered Species Act on the smelt's behalf. Reporter: Peter Jon Shuler
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