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Paddlefish (family Polyodontidae) are a family of ray-finned fish belonging to order Acipenseriformes, and one of two living groups of the order alongside sturgeons ...
Alex Cord on location (1993) performing the voice-over and on-camera work for The Paddlefish: An American Treasure. Exotic and Unusual Fishes of North America is a series of PBS documentary television specials about three species of American fish: The Alligator Gar: Predator or Prey?, The Paddlefish: An American Treasure, and Sturgeon: Ancient Survivors of the Deep.
Females do not spawn every year; rather they spawn every second or third year. Males spawn more frequently, usually every year or every other year beginning around age seven, some as late as nine or ten years of age. [29] [33] American paddlefish begin their upstream spawning migration sometime during early spring; some begin in late fall. [33]
The estimated time of the divergence between sturgeons and paddlefish varies. An estimate based on 30 protein-encoding nuclear markers suggest 204.1 million years ago, research on mitochondrial genomes suggest 155.2 million years ago, and Bayesian dating based on the combined matrix of molecular (mitogenomes) and morphological characters set ...
The paddlefish had likely been suffering for a very long time, a fishing guide said. Fishermen save fish from surprising, painful situation. ‘Probably happy to be caught’
Unlike its relative the American paddlefish, which is a planktivorous filter feeder, the Chinese paddlefish was primarily piscivorous, mainly feeding on small to medium-sized fishes like anchovies , cyprinids (Coreius, Rhinogobio), gobies as well as bagrid catfish and bothid flounders. Shrimp and crab were also eaten.
Chondrostei is a subclass of non-neopterygian ray-finned fish.While the term originally referred to the paraphyletic grouping of all non-neopterygian ray-finned fish, it was redefined by Patterson in 1982 to be a clade comprising the Acipenseriformes (which includes sturgeon and paddlefish) and their extinct relatives.
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