paddlefish

noun, plural pad·dle·fish·es, (especially collectively) pad·dle·fish.

1. a large ganoid fish, Polyodon spathula, of the Mississippi River and its larger tributaries, having a long, flat, paddlelike snout.

noun plural -fish or -fishes

1. a primitive bony fish, Polyodon spathula, of the Mississippi River, having a long paddle-like projection to the snout: family Polyodontidae
2. a similar and related Chinese fish, Psephurus gladius, of the Yangtze River