Salmo hucho

from The Collaborative International Dictionary of English v.0.48

Huch \Huch\, Huchen \Hu"chen\, n. [G.] (Zool.)
   A large salmon ({Salmo hucho} or {Salvelinus hucho})
   inhabiting the Danube; -- called also {huso}, and {bull
   trout}.
   [1913 Webster]