Associate Professor
brian.sidlauskas [at]

Office: 541-737-6789

Ichthyology, Systematics, Evolution, Biodiversity and Conservation of Fishes

Research in my lab seeks to understand the evolution, ecology and systematics of fishes on scales ranging from local to global. We use diverse morphological and molecular methods including phylogenetics, geometric morphometrics, population genetics and comparative anatomy.  Whether reconstructing evolutionary relationships, investigating cryptic species or testing patterns of trait evolution, our work helps reveal and protect the world’s tremendous biodiversity of fishes.

Undergraduate student advisor - Meet Brian! 


Affiliated with: 
Fisheries and Wildlife
I accept graduate students for the Fisheries and Wildlife Department
Courses Taught: 
  • FW 315 Ichthyology
  • FW 316 Systematics of Fishes

Professional Accomplishments


Ph.D. 2006, Evolutionary Biology, University of Chicago, Chicago, Illinois
M.S. 2003, Evolutionary Biology, University of Chicago, Chicago, Illinois
A.B. 1998, Biological Sciences, Cornell University, Ithaca, New York

My Awards

Honors and Awards: 

Meritorious Teaching Award in Ichthyology. 2020.  American Society of Ichthyologists and Herpetologists and American Elasmobranch Society. 

Fulbright Fellow. 2019. USA-Brazil Fulbright Program.

R.M. Wade Award for Excellence in Teaching.  2018. OSU College of Agricultural Sciences. 

Registry of Distinguished Teachers. 2018. OSU College of Agricultural Sciences.

Undergraduate Mentor of the Year.  2014.  Oregon State University.

Student Learning and Success Teamwork Award. 2013. Oregon State University

Vice Provost’s Award for Excellence in Outreach and Engagement: Online Teaching Innovation. 2012. Oregon State University.

Savery Outstanding Young Faculty Award. 2012. OSU College of Agricultural Sciences.  

Outstanding New Professor Award. 2012. OSU Agricultural Executive Council


My Publications