Esox nobilior

from The Collaborative International Dictionary of English v.0.48

Muskellunge \Mus"kel*lunge\, n. [From the Amer. Indian name.]
   (Zool.)
   A large American pike ({Esox masquinongy} formerly {Esox
   nobilior}) found in the Great Lakes, and other Northern
   lakes, and in the St. Lawrence River. It is valued as a food
   fish. [Written also {maskallonge}, {maskalonge},
   {maskinonge}, {muskallonge}, {muskellonge}, and
   {muskelunjeh}.]
   [1913 Webster]