rudd /ˈrʌd, ˈrʊd/
  象石斑魚的淡水魚
  Rudd n.  Zool. A fresh-water European fish of the Carp family (Leuciscus erythrophthalmus). It is about the size and shape of the roach, but it has the dorsal fin farther back, a stouter body, and red irises. Called also redeye, roud, finscale, and shallow.  A blue variety is called azurine, or blue roach.
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  rudd
       n : European freshwater fish resembling the roach [syn: Scardinius
           erythrophthalmus]