Author: Steindachner, 1866
Comments: Found in water courses at high altitudes and on the lowland rivers, with little current (Ref. 26100).  Also occurs in clear streams and springs.  Enters subterranean waters during winter or droughts.  Omnivorous.  Threatened due to water abstraction, pollution and introduction of <i>Salmo trutta</i>.  Considered on the very edge of extinction, with a single small population known (Ref. 59043).