The steelhead, which was formerly classed with the Atlantic salmon and brown trout under the genus Salmo (S. gairdnerii) was, a few years ago, reclassified as Oncorhynchus, the genus that includes the Pacific salmons, and is now O. mykiss. The cutthroat suffered the same fate, Salmo clarki becoming Oncorhynchus clarki. The rainbow trout is perhaps best thought of as a landlocked steelhead. There are now eight species within the genus Oncorhynchus; O. tschawytscha (chinook), O. kisutch (coho), O. nerka (sockeye), O. gorbuscha (pink), O. keta (chum), O. masou (Japanese cherry salmon) O. mykiss and O. clarki. The anadromous form of the coastal cutthroat (O. clarki, subspecies clarki), routinely survives spawning and may spawn many times. A small percentage (almost never more than 15%) of steelhead survive to spawn a second time. If memory serves, however, there is a record of a California hatchery hen that returned seven times. An extremely small percentage of Japanese cherry salmon survive the rigors of spawning and the remaining five species all die shortly after.