paddlefish
nounEither of two fishes of the family Polyodontidae that have a long paddle-shaped snout, Psephurus gladius of the Yangtze River or Polyodon spathula of the Mississippi River basin, whose roe is used for caviar.
nounThe spoon-billed sturgeon, Polyodon (or Spatularia) spatula, a ganoid fish of the family Polyodontidæ (or Spatulariidæ), attaining a length of five or six feet, abundant in the Mississippi river and its larger tributaries.
nounA large ganoid fish (
Any of several primitive
primitive fish of the Mississippi valley having a long paddle-shaped snout