The Pike stream cipher was invented by Ross Anderson to be a "leaner and meaner" version of FISH after he broke FISH in 1994; the name is a humorous allusion to the Pike fish. The cipher combines ideas from A5 with the Lagged Fibonacci generators used in FISH. It is about 10% faster than FISH, yet believed to be much stronger. It potentially has a huge key length, and no attacks have been published as of 2004.