When you take a ride around the Madu river in Sri Lanka, there is a pit-stop at the cinnamon farm and a pedicure treatment with the Red Garra Rufa nibbling the dead skin from your feet. These fishes, as I have learnt, are native to Turkey, and the spa is banned in several US states citing hygiene issues. It is an interesting experience, but make sure you have no cuts or injuries before you take the dip!