SNAKEHEADS (Pisces, Channidae)
A Biological Synopsis and
Risk Assessment

By Walter R. Courtenay, Jr., and James D. Williams

U.S. Geological Survey Circular 1251

U.S. DEPARTMENT OF THE INTERIOR
GALE A. NORTON, Secretary

U.S. GEOLOGICAL SURVEY
CHARLES G. GROAT, Director

Use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. Copyrighted material reprinted with permission.

2004

For additional information write to:

Walter R. Courtenay, Jr.
Florida Integrated Science Center
U.S. Geological Survey
7920 N.W. 71st Street
Gainesville, Florida 32653
walter_courtenay@usgs.gov

For additional copies please contact:

U.S. Geological Survey
Branch of Information Services
Box 25286
Denver, Colorado 80225-0286
Telephone: 1-888-ASK-USGS
World Wide Web: http://www.usgs.gov

Library of Congress Cataloging-in-Publication Data

Walter R. Courtenay, Jr., and James D. Williams

Snakeheads (Pisces, Channidae)A Biological Synopsis and Risk Assessment / by Walter R.
Courtenay, Jr., and James D. Williams
p. cm. (U.S. Geological Survey circular ; 1251)
Includes bibliographical references.
ISBN.0-607-93720 (alk. paper)
1. Snakeheads  Pisces, Channidae Invasive Species 2. Biological Synopsis and Risk
Assessment. Title. II. Series.

QL653.N8D64 2004

597.80976889-dc22

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