<p>Silver eels collected in Shenandoah River to be radio tagged for a tracking study. American eels begin sexual differentiation at a length of about 8 to 10 inches and, depending on eel density, become male or female silver eels.
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Credit: Maryland Fishery Resources Office, USFWS
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/43322816@N08">U.S. Fish and Wildlife Service Northeast Region</a>
2011-09-13 12:13
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/usfwsnortheast/6144449190/">American eel</a>