The "Grunion" was never heard from again. Both provide the name Christopher Grunion. Anglers can fish for perch, corbina, grunion and yellow-fin croaker. Grunion feeding habits are not well known. The following year, the U.S. Navy confirmed that the find was the "Grunion". The "Grunion" received one battle star for her World War II service. Scientists first identified grunion in San Francisco Bay in 1860. A related species, the false grunion ("Colpichthys regis") lives in the Gulf of California. Despite local concentrations, the grunion is not an abundant species. In 2001, Christy released his feature-length film, "Leaving Grunion County". The coastal Indians in California harvested grunion during spawning runs. May. This closure is still in effect to protect grunion during their peak spawning period. In a laboratory setting, grunion eat live brine shrimp.