Field Notes
U.S. Fish & Wildlife Service
Field Notes Entry   
Agencies Come Together for Rio Grande Silvery Minnow Tagging
Southwest Region, March 28, 2005
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Joining forces, a team made up of staff from the New Mexico Fishery Resources Office, the Albuquerque Biological Park, and Dexter National Fish Hatchery and Technology Center (Center) began tagging over 40,000 Rio Grande silvery minnows on March 28. Tagging sessions are coordinated months in advance and take weeks to complete.

The minnows were tagged with a Visible Implant Elastomer (VIE). The VIE is a colored fluorescent elastomer material that is injected into tissue with a hypodermic syringe. The material then cures into a pliable solid well defined mark. When the minnow is placed under a blue light, the tag will fluoresce. The location and color of the tag will identify the fish and its year class. Tagging the minnows will enable field biologists to identify and record pertinent data on the minnow. This partnership was made possible by the Middle Rio Grande ESA Collaborative Program. The minnows are scheduled to leave the Center in mid-April, and will be placed in their natural habitat, the mighty Rio Grande

Contact Info: Martin Valdez, 505-248-6599, martin_valdez@fws.gov
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