Guppies nibbling on my fingers is quite relaxing.

Welcome to Mulan's Entertainment! Guppies are also known as millionfish and rainbow fish. It is a tropical fish which is live-bearing.

They nibble on your fingers but they are so small that their bites don’t hurt. However, if you leave your hand long enough for your skin to become soft then the guppies can begin to inflict damage. Better avoid that scenario. XD