The Collaborative International Dictionary of English v.0.48:

Skegger \Skeg"ger\, n. (Zool.)
   The parr. --Walton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Parr \Parr\ (p[aum]r), n. [Cf. Gael. & Ir. bradan a salmon.]
   (Zool.)
   (a) A young salmon in the stage when it has dark transverse
       bands; -- called also samlet, skegger, and
       fingerling.
   (b) A young leveret.
       [1913 Webster] Parrakeet