tench

from WordNet (r) 3.0 (2006)

tench
    n 1: freshwater dace-like game fish of Europe and western Asia
         noted for ability to survive outside water [syn: {tench},
         {Tinca tinca}]

from The Collaborative International Dictionary of English v.0.48

Tench \Tench\, n. [OF. tenche, F. tanche, L. tinca.] (Zool.)
   A European fresh-water fish ({Tinca tinca}, or {Tinca
   vulgaris}) allied to the carp. It is noted for its tenacity
   of life.
   [1913 Webster]