American paddlefish, more than 300 million years old, receive boost from scientists, schoolchildren - Pete Thomas Outdoors
![Shedd Aquarium on Twitter: "Paddlefish aren't dropping their jaw in surprise. These unique fish are filter feeders. They open their mouth wide to filter and eat tiny microscopic organisms called zooplankton as Shedd Aquarium on Twitter: "Paddlefish aren't dropping their jaw in surprise. These unique fish are filter feeders. They open their mouth wide to filter and eat tiny microscopic organisms called zooplankton as](https://pbs.twimg.com/media/E-KSwdNXoAMDSyk.jpg:large)
Shedd Aquarium on Twitter: "Paddlefish aren't dropping their jaw in surprise. These unique fish are filter feeders. They open their mouth wide to filter and eat tiny microscopic organisms called zooplankton as
Wildlife.net - American Paddlefish (Polyodon spatula): 1.5m (4ft 9in). There are actually two species; the American and the Chinese Paddlefish, the American species is the oldest surviving animal in North America. Fossil
![136 Paddlefish Stock Photos, Pictures & Royalty-Free Images - iStock | Paddlefish china, American paddlefish 136 Paddlefish Stock Photos, Pictures & Royalty-Free Images - iStock | Paddlefish china, American paddlefish](https://media.istockphoto.com/id/1180235612/photo/the-american-paddlefish-is-a-species-of-basal-ray-finned-fish-closely-related-to-sturgeons.jpg?s=612x612&w=0&k=20&c=cquMWsOq7-aGgFO-IEcAIpibGiW_iCcOF_1IGP3rDvs=)