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]

The Collaborative International Dictionary of English v.0.48:

malma \mal"ma\, n. (Zool.)
   A spotted trout (Salvelinus malma), inhabiting Northern
   America, west of the Rocky Mountains; -- called also Dolly
   Varden trout, bull trout, red-spotted trout, and
   golet.
   [1913 Webster]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dolly Varden \Dol"ly Var"den\
   1. A character in Dickens's novel "Barnaby Rudge," a
      beautiful, lively, and coquettish girl who wore a
      cherry-colored mantle and cherry-colored ribbons.
      [1913 Webster]

   2. A style of light, bright-figured dress goods for women;
      also, a style of dress.
      [1913 Webster]

   Dolly Varden trout (Zool.), a trout of northwest America;
      -- called also bull trout, malma, and red-spotted
      trout. See Malma.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bull trout \Bull" trout`\ (Zool.)
   (a) In England, a large salmon trout of several species, as
       Salmo trutta and Salmo Cambricus, which ascend
       rivers; -- called also sea trout.
   (b) Salvelinus malma of California and Oregon; -- called
       also Dolly Varden trout and red-spotted trout.
   (c) The huso or salmon of the Danube.
       [1913 Webster]