The Collaborative International Dictionary of English v.0.48:

Speckled \Spec"kled\, a.
   Marked or variegated with small spots of a different color
   from that of the rest of the surface.
   [1913 Webster]

   Speckled Indians (Ethnol.), the Pintos.

   Speckled trout. (Zool.)
   (a) The common American brook trout. See Trout.
   (b) The rainbow trout.
       [1913 Webster]

WordNet (r) 3.0 (2006):

speckled trout
    n 1: a delicious freshwater food fish [syn: brook trout,
         speckled trout]
    2: North American freshwater trout; introduced in Europe [syn:
       brook trout, speckled trout, Salvelinus fontinalis]