An unusual spa treatment is being offered in London which exfoliates your feet using 150 fish. The Garra rufa fish have no teeth and nibble away dead skin using suction-shaped mouths leaving healthy new skin underneath untouched. The carp, which originated in Turkey, have long been used in the Far East to treat skin complaints such as eczema and psoriasis. In Japan they offer whole-body immersion fish spas and recently the craze has spread to the U.S, Europe and the UK..