My team of Garra Rufa fish at work...

 

The bigger fish on the right (left foot) are straight into the task, the smaller fish on the left (right foot) give a gentler pedicure but just as cleansing and relaxing.

 

 

The usual practice is to put both of our clients feet into the one tank, you will get the choice of the smaller fish or the larger ones depending on how brave you feel.