On first seening the "Slovenia steelhead" my immediate thought was a huchen - in the few steelhead I have handled can not recall ever seeing one with out spots on its tail.

The huchen is found in the Daunbe drainage and is a closely related species to the Siberian taimen - some even think the two are just sub-species of the same fish. Both can get very large (over 100 pounds) though the largest taimen have exceeded 200 pounds.

tight lines
curt