There are many Garra rufa subspecies that were the source of compounds used in treating modern autoimmune and skin disorders.

The fishes histories go back thousands of years. As a species it is super interesting... some evolved in hot-spring conditions that would simply cook most other animals. =3

https://en.wikipedia.org/wiki/Red_garra

https://www.youtube.com/watch?v=CLWkojAnyH0