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| Keywords: Detail of American paddlefish fry - 2013.jpg en American paddlefish Polyodon spathula fry under the microscope at the Garrison Dam National Fish Hatchery in Riverdale North Dakota in the United States When they hatch paddlefish babies or fry are about the size of a thumbnail and semi-transparent This image shows some of the features of the fry Arrows point to the small bump on the nose that will develop into the paddlefish's rostrum its elongated bill the minute eyes and the small heart flushed pink with blood The corkscrew is technically known as the melamine plug The plug blocks the digestive tract until the fry is mature enough to digest food The it is absorbed by the fry at about two to three weeks of age and disappears http //www flickr com/photos/usfwsmtnprairie/9515281563/ Garrison Dam National Fish Hatchery Fish and Wildlife Service U S Department of the Interior 2013-08-15 Polyodon spathula PD-USGov | ||||
