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Effectiveness of stocking 7-inch channel catfish to reservoir fisheries

Randy Stewart with a channel catfish from Lone Chimney Lake, Oklahoma.


January 2010 - December 2013


Oklahoma anglers pursue catfish proportionally more than the national average, making up nearly one-half (43%) of the total angling population, making this group of anglers the second-most abundant in the state. Channel catfish are also the third most sought after fish in Oklahoma. As a result, recreational angling for catfish is a top priority for the Oklahoma Department of Wildlife Conservation (ODWC), devoting a significant proportion of hatchery, survey, and management resources toward this activity. We are working to determine the contribution of stocked 7-inch channel catfish to angler catch, harvest, and satisfaction and to overall population structure in 6 medium-sized (500 – 10,000 acres) reservoirs in Oklahoma.

Research Products and Activities

Peer Reviewed Publications

  • Long, J. M. and D. R. Stewart. 2010. Verification of otolith identity used by fisheries scientists for aging channel catfish. Transactions of the American Fisheries Society 139:1775-1779. Abstract | 
  • Stewart, D.R. and J.M. Long. 2011. Mass-marking Channel Catfish Fingerlings by Immersion in Oxytetracycline. Proceedings of the Oklahoma Academy of Science 91, 31-36. Abstract |  Download  |  Publisher Website | 
  • Stewart, D.R. and J.M. Long. 2016. Using an experimental manipulation to determine the effectiveness of a stock enhancement program. Journal of Freshwater Ecology 31:37-52. Abstract | 
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  • Stewart, D.R. 2013. Factors related to stocking success of 178-mm channel catfish in medium size Oklahoma reservoirs. Doctoral dissertation, Oklahoma State University, Stillwater.


  • Stewart, D.R. and J.M. Long. 2010. Verification of otolith origin used for aging channel catfish by fisheries managers. American Fisheries Society 2nd International Catfish Symposium, St. Louis, MO June 20-22, 2010

Current Staff

Federal Staff: 95

Masters Students: 240

Phd Students: 143

Post Docs: 52

University Staff: 245

5 Year Summary

Students graduated: 702

Scientific Publications: 1948

Presentations: 4253



  • James LongPrincipal Investigator
  • David StewartStudent

Funding Agencies

  • Oklahoma Department of Wildlife Conservation


Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey