In early 1871, American shad was a popular food and sport fish, and the California Fish Commission engaged Seth Green, regarded as the father of fish culture in North America, to transport more than 12,000 American Shad fry by train to California. Green filled milk jugs with shad fry and took them onto a transcontinental train. After a seven-day journey, he arrived in California with 10,000 little fish still alive, and he released them into the Sacramento River near the town of Tehama. The project turned out to be more successful than Green could have imagined. From Sacramento, shad colonized and were introduced to rivers all along the West Coast. … They make up over 90 percent of the recorded upstream migrants in some years and raise concerns about their impact on diminished salmon runs. … However, according to Thomas Quinn, a salmon expert and professor emeritus at the University of Washington, the impacts of shad on salmon may not actually be as bad as some people think.