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paddlefish    
n. 大硬鲭鱼

大硬鲭鱼

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  • Paddlefish - Wikipedia
    Often called " primitive fish," paddlefish represent one of the earliest diverging lineages of ray-finned fish, having separated from all other living groups over 300 million years ago Both living and fossil paddlefish occur almost exclusively in North America and China [5]
  • Paddlefish (Polyodon spathula) | U. S. Fish Wildlife Service
    Paddlefish can be distinguished from all other North American freshwater fishes by the presence of a large, paddle-shaped rostrum (up to 1 3 total body length) on the snout anterior to the mouth The overall color of a paddlefish is bluish gray to blackish on the back, grading to white on its belly Paddlefish can also live for a long time
  • Paddlefish | Characteristics Facts | Britannica
    paddlefish, (Polyodon spathula), archaic freshwater fish with a paddlelike snout, a wide mouth, smooth skin, and a cartilaginous skeleton A relative of the sturgeon, the paddlefish makes up the family Polyodontidae in the order Acipenseriformes
  • Paddlefish (Polyodon spathula) - Texas Parks Wildlife . . .
    Paddlefish have a gray, shark-like body with a deeply forked tail, and a long, flat blade-like snout (looks like a kitchen spatula) almost one third of its body's entire length
  • Paddlefish - Missouri Department of Conservation
    Like a small shark, the paddlefish nearly lacks scales and has a cartilaginous skeleton; like a baleen whale, it filters its dinner from the water But no other fish alive today has a paddle for a snout
  • What Is a Paddlefish? Understanding This Unique Freshwater . . .
    What Is the Average Lifespan of a Paddlefish? You can expect a paddlefish to live between 20-30 years on average, though their lifespans vary considerably by region The hardy swimmers of Yellowstone and upper Missouri River outlive their southern cousins! Females typically enjoy longer lives (averaging 26 years) than males (about 16 years)
  • What is special about paddlefish? - The Institute for . . .
    What is Special About Paddlefish? The paddlefish is truly special because of its ancient lineage, unique rostrum, and filter-feeding habits, offering a glimpse into a primitive world unlike any other fish species today Its threatened status also makes it a species of particular conservation concern





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