Doctor fish

The Doctor Fish (Garra rufa), also known as the Pedicure Fish, is popular in more than just the aquarium hobby.  It is famous for its ability to graze on dead skin cells on humans, so it is used in many clinics that treat psoriasis and other human skin problems.  In these clinics, patients dip their limbs into the water and the Doctor Fish swarm to graze on the patient’s dead skin.  In the aquarium, this fish is an interesting scavenger and grazer that is compatible with a variety of tankmates.

A member of the Cyprinidae family, the Doctor Fish inhabits most of the cooler freshwater areas of the Mediterranean and Middle East regions.  It prefers very oxygen-rich, fast-flowing water and will often swim directly against the current of a filter output or powerhead.  Very fast water flow is a key to success in keeping this fish.  Another key to success is a secure lid or canopy on the aquarium, as this fish is a skilled jumper and climber. 
Interesting personality
Generally peaceful
Grazes biofilm from surfaces
Excellent for the cold water aquarium    
RECOMMENDED TANK PARAMETERS:
Temperature:  57° - 68° F (14° - 20° C)
pH:  6.0 - 8.0
KH:  6 - 10 dKH
Minimum tank size:  30 gallons for a small group
CARE GUIDELINES: 
Diet:  Omnivorous. Accepts high quality dry and frozen foods and needs a balance of both plant-based and meaty foods.
Social behavior:  Generally peaceful.  Lives in loose groups but may fight with its own kind and similar fish in smaller tanks.     
Origin:  Mediterranean and Middle Eastern regions
Average adult size:  3.9 - 4.7 inches (10 - 12 cm)
Average purchase size:  1 inch (2.5 cm)