For students, faculty, personnel from federal and state agencies, museums, 
environmental organizations and consulting firms

Species Identification and Assessment of Northeastern Freshwater Fish 
Assemblages
June 19 - June 25       
Instructor: David Halliwell   
Location: Eagle Hill Institute, Steuben, Me

Freshwater fish in the northeastern United States number over 150 species, 
inclusive of native and introduced forms, resident to ponded and flowing waters 
of varying habitats and water quality.  Sportfish species (trout, salmon, bass, 
pike and perch) are most recognizable, while many of the vast minnow (one-third 
of the fish fauna) and non-game species are more difficult to identify, 
particularly in the field. This seminar will focus on the taxonomy and field/ 
laboratory identification of 28 freshwater fish families, inclusive of 
diadromous (migratory) species. Through lectures, actual field sampling (minnow 
trapping and day/night beach seining), examination of fresh and 
preserved-aquarium specimens and use of technical keys, participants will gain 
an understanding of the taxonomy, morphology, and ecology of freshwater fish. 
Fish origins, distributions and conservation status will be emphasized and 
development of Indices of Biotic Integrity (IBI) and the Biological Condition 
Gradient (BCG) reviewed, as well as an introduction to pre-contact fish remains 
found at Maine archaeological sites. A listing of historical and current 
scientific literature will also be provided. This seminar will be of great 
interest to aquatic-wildlife-conservation biologists and scientists, 
environmental consultants, natural historians and others who wish to learn more 
about northeastern United States freshwater fish and resident fish species 
assemblages.

Instructor, Dave Halliwell ([email protected]) has been an Aquatic 
Biologist with Maine Department of Environmental Protection since 1999.  Dave 
has spent over three decades identifying and investigating the
habitats of freshwater fishes while working with northeastern State and Federal 
fish and water quality agencies and has considerable experience teaching 
University and field courses related to New England fish and wildlife. Dr. 
Halliwell is a co-author of the Inland Fishes of Massachusetts (2002) and is 
currently drafting a treatise on the Freshwater Fishes of New England Proper. 
All participants will be provided with a comprehensive course notebook and 
study guide.

For general information, go to 
http://eaglehill.us/programs/nhs/natural-history-seminars.shtml
For course calendar and course descriptions, go to 
http://www.eaglehill.us/programs/nhs/nhs-calendar.shtml
For application information and cost breakdown, go to 
http://www.eaglehill.us/programs/general/application-info.shtml
For more information, contact [email protected], 207-546-2821 x 

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