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Species at Risk

We have conducted studies in Canada and the United States of America related to population demographics, distribution, fish passage, reproductive behaviour, spawning habitat and egg and larval development of (click links below):

Lake Chubsucker (Erimyzon sucetta) - COSEWIC Endangered (April 2008)

Lake Sturgeon (Acipenser fulvescens) - COSEWIC Threatened (April 2006)

Silver Shiner (Notropis photogenis) - COSEWIC Threatened (April 2011)

American Eel (Anguilla rostrata) -COSEWIC Threatened (2012)

Greater Redhorse (Moxostoma valenciennesi) - COSEWIC mid-priority Candidate 2004

Black Redhorse (Moxostoma duquesnei) - COSEWIC Threatened 2005

Spotted Gar (Lepisosteus oculatus) - COSEWIC Threatened 2005

Wavy-rayed Lampmussel (Lampsilis fasciola) - COSEWIC Endangered

Blue Sucker (Cycleptus elongatus) - State Threatened (Texas)
Razorback Sucker (Xyrauchen texanus) - Federally Endangered (USA)

Freshwater Mussel Identification

 razorback sucker immediately after surgical implantation of a radio tag

A Razorback Sucker immediately after sonic transmitter implantation

 Healed Razorback Sucker implanted by Biotactic in 2008 with 3 year ultrasonic transmitter - Arizona USA (Photo courtesy Bio-West Inc. 2011)

Sensory cephalic pores on a razorback sucker from the ultrasonic tracking study 

Sensory cephalic pores on a Razorback Sucker from the ultrasonic tracking study
in Las Vegas, Nevada  2005 - 2011

Blue sucker after surgery


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