![](http://www.alamy.com/thumbs/6/C9B800A5-C35E-427F-952B-52900A80A208/2AKTHEB.jpg)
Researchers examining yellow perch specimens from the Choptank river, Severna Park, Maryland, USA.
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Photo credit: © Edwin Remsberg / Alamy / Afripics
License: Licensed
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Keywords: creek, dissect, examination, examine, fish, graduate, lab, laboratory, park, perch, phd, reproduction, research, researching, river, scientific, severna, specimen, student, study, toxicologist, watershed, yellow