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

The Collaborative International Dictionary of English v.0.48:

Fingerling \Fin"ger*ling\, n. [Finger + -ling.] (Zool.)
   A young salmon. See Parr.
   [1913 Webster] fingerpaint

WordNet (r) 3.0 (2006):

fingerling
    n 1: a young or small fish