Closely related to the more common Garra rufa (medicine fish)...this variety is supposed to get upto 25 cm....not sure though because mine hasn't grown at all and I've had him over 6 months. Great scavanger and addition to any tank.
https://www.youtube.com/watch?v=4J5jw4eI1D8
https://www.youtube.com/watch?v=4J5jw4eI1D8