Flathead Catfish
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Name and Code
Family
Ictaluridae - North American catfishes
Species
Pylodictis olivaris
Taxonomic Authority
(Rafinesque, 1818)
Common Name(s)
Flathead Catfish
French Name
barbue à tête plate
OMNR Code
239
Family TSN
163995
Parent TSN
164028
Species TSN
164029
Conservation Status
Global Rank (GRank)
G5 (1996-09-19)
National Rank (NRank)
NNR (1996-09-05)
Provincial Rank (SRank)
SNA (1997-10-02)
COSEWIC Status
Data Deficient (Apr 2008)
SARO Status
Data Deficient
AFS Status
none
Ecological Value
Ontario Origin
natural dispersal
General Abundance
rare
Tolerance
tolerant
Economic Importance
none
Habitat and Feeding
General Habitat(s)
lacustrine; riverine
Environment
benthic
Trophic Class
invertivore/carnivore
Thermal Regime
warmwater
Habitat Preference
deep pools with submerged cover in low- to moderate-gradient, small to large rivers, lakes and impoundments; juveniles in rocky and sandy runs and riffles; preferred water temperature range 31.5-33.5°C
Reproduction
Reproductive Guild
Guarders: Nest spawners: Speleophils
Spawning Habitat(s)
riverine
Spawning Season
summer
Spawning Month(s)
June-July
Spawning Temperature (°C)
22-29
Fecundity
4,076-58,792
Nursery Habitat(s)
riverine
Size and Age
Adult Length (cm)
35.6-86.4 TL
Adult Weight (kg)
0.5-8.0
Age at Maturity (yrs)
3-5 (m); 4-6 (f)
Maximum Length (cm)
155 TL
Maximum Weight (kg)
63.45
Lifespan (yrs)
17-28
Ontario Range Map
Flathead Catfish range
Ontario Distribution
western Lake Erie, Lake St. Clair; first reported from Ontario waters of Lake Erie in 1978
Photograph
Flathead Catfish photograph
Notes
low tolerance to fluctuating water levels; hybrids with Channel Catfish reported
Ontario Records
Record Length (cm)
101.0 TL
Record Weight (kg)
none
Information Sources
Barbour, M.T., J. Gerritsen, B.D. Snyder, and J.B. Stribling. 1999. Tolerance and trophic guilds of selected fish species. Appendix C in Rapid bioassessment protocols for use in streams and wadeable rivers: periphyton, benthic macroinvertebrates and fish, second edition. EPA 841-B-99-002. U.S. Environmental Protection Agency; Office of Water. Washington, DC.
Becker, G.C. 1983. Fishes of Wisconsin. University of Wisconsin Press. Madison, WI. xii + 1052 pp.
Carlander, K.D. 1969. Handbook of freshwater fishery biology. Volume one. Life history data on freshwater fishes of the United States and Canada, exclusive of the Perciformes. Iowa State University Press. Ames, IA. vi + 752 pp.
Coad, B.W. with H. Waszczuk and I. Labignan. 1995. Encyclopedia of Canadian fishes. Museum of Nature and Canadian Sportfishing Productions. Ottawa and Waterdown, ON. viii + 928 pp.
Coker, G.A., C.B. Portt, and C.K. Minns. 2001. Morphological and ecological characteristics of Canadian freshwater fishes. Can. MS Rpt. Fish. Aquat. Sci. 2554:iv+89p.
Cooper, E.L. 1983. Fishes of Pennsylvania and the northeastern United States. Pennsylvania State University Press. University Park and London. vii + 243 pp.
COSEWIC. 2016. Canadian wildlife species at risk. October 2016. Committee on the Status of Endangered Wildlife in Canada. Gatineau, QC. iv + 113 pp.
Cudmore-Vokey, B. and E.J. Crossman. 2000. Checklists of the fish fauna of the Laurentian Great Lakes and their connecting channels. Can. MS Rpt. Fish. Aquat. Sci. 2550:v+39p.
Ditz, K., A. Dextrase, and E. Holm. 2009. Ontario Ministry of Natural Resources fish species codes & common names. Ichthyology and Herpetology, Royal Ontario Museum. May 1994. Revised September 2005 by A. Dextrase, MNR and modified January 2009 by E. Holm, ROM.
Etnier, D.A. and W.C. Starnes. 1993. The fishes of Tennessee. [2nd printing, 2001]. The University of Tennessee Press. Knoxville, TN. xiv + 689 pp.
Goldstein, R.M. and T.P. Simon. 1999. Toward a united definition of guild structure for feeding ecology of North American freshwater fishes. Pages 123-202 in T.P. Simon [Ed]. Assessing the sustainability and biological integrity of water resources using fish communities. CRC Press. Boca Raton, FL. xx + 671 pp.
Goodchild, C.D. 1993. Status of the Flathead Catfish, Pylodictis olivaris, in Canada. Can. Field-Nat. 107(4):410-416.
Goodyear, C.S., T.A. Edsall, D.M. Ormsby Dempsey, G.D. Moss, and P.E. Polanski. 1982. Atlas of the spawning and nursery areas of Great Lakes fishes. Volume thirteen: Reproductive characteristics of Great Lakes fishes. U.S. Fish and Wildlife Service. Washington, DC. FWS/OBS-82/52.
Holm, E., N. Mandrak, and M. Burridge. 2009. The ROM field guide to freshwater fishes of Ontario. Royal Ontario Museum Science Publication. Toronto, ON. 462 pp.
Hubbs, C.L. and K.F. Lagler. 1964. Fishes of the Great Lakes region. University of Michigan Press. Ann Arbor, MI. xv + 213 pp.
Hubbs, C.L., K.F. Lagler, and G.R. Smith. 2004. Fishes of the Great Lakes region, revised edition. University of Michigan Press. Ann Arbor, MI. xvii + 276 pp.
Integrated Taxonomic Information System (ITIS). 2014. On-line database. (http://www.itis.gov), accessed 07 June 2014.
Jenkins, R.E. and N.M. Burkhead. 1993. Freshwater fishes of Virginia. American Fisheries Society. Bethesda, MD. xxiii + 1079 pp.
Lee, D.S., C.R. Gilbert, C.H. Hocutt, R.E. Jenkins, D.E. McAllister, and J.R. Stauffer, Jr. 1980. Atlas of North American freshwater fishes. North Carolina State Museum of Natural History Publication 1980-12. Raleigh, NC. x + 867 pp.
Mandrak, N.E. and E.J. Crossman. 1992. A checklist of Ontario freshwater fishes annotated with distribution maps. Royal Ontario Museum Life Sciences Miscellaneous Publication. Toronto, ON. v + 176 pp.
Meador, R.M. and D.M. Carlisle. 2007. Quantifying tolerance indicator values for common stream fishes of the United States. Ecol. Indicators. 7:329-338.
NatureServe. 2015. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe. Arlington, Virginia. (http://www.natureserve.org/explorer), accessed 11 June 2016.
Ontario Ministry of Natural Resources (OMNR). 2013. Extinct, not at risk and data deficient species in Ontario list, 18 April 2013.
Page, L.M. and B.M. Burr. 2011. Peterson field guide to freshwater fishes of North America north of Mexico, second edition. Houghton Mifflin Harcourt. Boston, MA. xix + 663 pp.
Page, L.M., H. Espinosa-Pérez, L.T. Findley, C.R. Gilbert, R.N. Lea, N.E. Mandrak, R.L. Mayden, and J.S. Nelson. 2013. Common and scientific names of fishes from the United States, Canada, and Mexico. 7th Edition. American Fisheries Society, Spec. Publ. 34. Bethesda, MD. 243 pp.
Phillips, G.L., W.D. Schmid, and J.C. Underhill. 1982. Fishes of the Minnesota region. University of Minnesota Press. Minneapolis, MN. x + 248 pp.
Ross, S.T. 2001. The inland fishes of Mississippi. University Press of Mississippi. xx + 624 pp.
Scott, W.B. and E.J. Crossman. 1973. Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184. [1998 Reprint] Galt House Publications Ltd. Oakville, ON. xx + 966 pp.
Scharpf, C. 2006. Annotated checklist of North American freshwater fishes, including subspecies and undescribed forms. Part II: Catostomidae through Mugilidae. American Currents 32(4):1-39.
Simon, T.P. 1999. Assessment of Balon’s reproductive guilds with application to midwestern North American freshwater fishes. Pages 97-122 in T.P. Simon [Ed]. Assessing the sustainability and biological integrity of water resources using fish communities. CRC Press. Boca Raton, FL. xx + 671 pp.
Simon, T.P. and R. Wallus. 2003. Reproductive biology and early life history of fishes in the Ohio River drainage. Volume 3. Ictaluridae – catfish and madtoms. CRC Press. Boca Raton, FL. xxiv + 204 pp.
Smith, P.W. 2002. The fishes of Illinois. University of Illinois Press. Urbana and Chicago, IL. xxix + 314 pp.
Stauffer, Jr., J.R., J.M. Boltz and L.R. White. 1995. The fishes of West Virginia. Reprinted from The Proceedings of the Academy of Natural Sciences of Philadelphia 146:1-389. Pennsylvania State University. 389 pp.
Stauffer, Jr., J.R., R.W. Criswell and D.P. Fischer. 2016. The fishes of Pennsylvania. Cichlid Press. El Paso, TX. 556 pp.
Trautman, M.B. 1981. The fishes of Ohio with illustrated keys, revised edition. Ohio State University Press. Columbus, OH. xxv + 782 pp.