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| Least Darter |
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| Return To Search |
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| Name and Code |
| Family |
| Percidae - perches and darters |
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| Species |
| Etheostoma microperca |
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| Taxonomic Authority |
| Jordan & Gilbert 1888 |
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| Common Name(s) |
| Least Darter |
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| Conservation Status |
| Global Rank (GRank) |
| G5 (2016-02-09) |
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| National Rank (NRank) |
| N4 (2016-02-09) |
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| Provincial Rank (SRank) |
| S4 (1997-10-02) |
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| COSEWIC Status |
| Not at Risk (Apr 1989) |
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| Ecological Value |
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| General Abundance |
| uncommon |
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| Length-Weight Regression Coefficents |
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| Habitat and Feeding |
| General Habitat(s) |
| lacustrine; riverine |
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| Trophic Class |
| invertivore |
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| Habitat Preference |
| among submergent vegetaion in clear lakes, stream marigins and pools of creeks and small rivers with soft sand, mud or organic substrates |
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| Reproduction |
| Reproductive Guild |
| Guarders: Substratum choosers: Phytophils |
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| Spawning Habitat(s) |
| lacustrine; riverine |
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| Spawning Month(s) |
| May-June |
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| Spawning Temperature (°C) |
| 13-18 |
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| Nursery Habitat(s) |
| lacustrine; riverine |
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| Size and Age |
| Adult Length (cm) |
| 2.5-3.8 TL |
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| Adult Weight (kg) |
| 0.0001-0.0004 |
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| Maximum Length (cm) |
| 4.6 TL |
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| Maximum Weight (kg) |
| 0.0005 |
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| Ontario Records |
| Record Length (cm) |
| 4.2 TL |
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| Ontario Range Map |
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Ontario Distribution |
| southern Ontario tributaries of Lakes Erie, St. Clair, Huron and Ontario (extirpated) |
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| Photographs |
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| Notes |
| smallest fish in Canada with mature adults 2.2 cm in length; fractional spawner; most adults die shortly after first spawning season |
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| Information Sources |
| Bailey, R.M., W.C. Latta, and G.R. Smith. 2004. An atlas of Michigan fishes with keys and illustrations for their identification. University of Michigan Museum of Zoology Miscellaneous Publications No. 192. iv + 215 pp. |
| 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. |
| 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 + 89 p. |
| Cooper, E.L. 1983. Fishes of Pennsylvania and the northeastern United States. Pennsylvania State University Press. University Park and London. vii + 243 pp. |
| COSEWIC. 2023. Canadian wildlife species at risk. October 2023. Committee on the Status of Endangered Wildlife in Canada. Gatineau, QC. iv + 130 pp. |
| Cudmore, B. and N.E. Mandrak. 2018. The baitfish primer: a guide to identifying and protecting Ontario's baitfishes. Fisheries and Oceans Canada, Bait Association of Ontario, Ontario Ministry of Natural Resources and Forestry, Ontario Federation of Anglers and Hunters. March 2018. 40 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 + 39 p. |
| Dalton, K.W. 1990. Status of the Least Darter, Etheostoma microperca, in Canada. Can. Field-Nat. 104(1):53-58. |
| Ditz, K. and E. Holm. 2023. Ontario Fish Species Codes and Names. Ichthyology and Herpetology, Royal Ontario Museum. May 1994. Modified February 2023. |
| 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. |
| Holm, E., N. Mandrak, and M. Burridge. 2021. A field guide to freshwater fishes of Ontario, second edition. Royal Ontario Museum Science Publication. Toronto, ON. 486 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). 2023. On-line database. http://www.itis.gov, retrieved 02 May 2023. |
| Kuehne, R.A. and R.W. Barbour. 1983. The American darters. The University Press of Kentucky. Lexington, KY. 177p. |
| Lane, P.A., C.B. Portt, and C.K. Minns. 1996. Nursery habitat characteristics of Great Lakes fishes. Can. MS Rpt. Fish. Aquat. Sci. 2338: v + 42 p. |
| Lane, P.A., C.B. Portt, and C.K. Minns. 1996. Adult habitat characteristics of Great Lakes fishes. Can. MS Rpt. Fish. Aquat. Sci. 2358: v + 43 p. |
| Lane, P.A., C.B. Portt, and C.K. Minns. 1996. Spawning habitat characteristics of Great Lakes fishes. Can. MS Rpt. Fish. Aquat. Sci. 2368: v + 48 p. |
| 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. |
| NatureServe. 2023. NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer [web application]. NatureServe, Arlington, Virginia. Available https://explorer.natureserve.org/ (Accessed: February 2, 2023). |
| Ontario Ministry of Natural Resources (OMNR). 2013. Extinct, not at risk and data deficient species in Ontario list, 18 April 2013. |
| Page, L.M. 1983. Handbook of Darters. T.F.H. Publications, Inc. Neptune City, NJ. 271 pp. |
| 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., K.E. Bemis, T.E. Dowling, H.S. Espinosa-Pérez, L.T. Findley, C.R. Gilbert, K.E. Hartel, R.N. Lea, N.E. Mandrak, M.A. Neighbors, J.J. Schmitter-Soto, and H.J. Walker Jr. 2023. Common and scientific names of fishes from the United States, Canada, and Mexico. 8th Edition. American Fisheries Society, Spec. Publ. 37. Bethesda, MD. 439 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. |
| Portt, C.B., G. Coker, and C.K. Minns. 1999. Riverine Habitat Characteristics of Fishes of the Great Lakes Watershed. Can. MS Rpt. Fish. Aquat. Sci. 2481: vi + 62 p. |
| Scott, W.B. 1967. Freshwater fishes of eastern Canada, second edition. University of Toronto Press. Toronto, ON. xii + 137 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. 2008. Annotated checklist of North American freshwater fishes, including subspecies and undescribed forms. Part IV: Cottidae through Percidae. American Currents 34(4):1-43. |
| 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. 2006. Reproductive biology and early life history of fishes in the Ohio River drainage. Volume 4. Percidae - perch, pikeperch and darters. CRC Press. Boca Raton, FL. xxviii + 619 pp. |
| Smith, P.W. 2002. The fishes of Illinois. University of Illinois Press. Urbana and Chicago, IL. xxix + 314 pp. |
| Stewart, K.W. and D.A. Watkinson. 2004. The freshwater fishes of Manitoba. University of Manitoba Press. Winnipeg, MB. xvii + 276 pp. |
| Trautman, M.B. 1981. The fishes of Ohio with illustrated keys, revised edition. Ohio State University Press. Columbus, OH. xxv + 782 pp. |
| Winterton, G. [Ed]. 2005. The comprehensive bait guide for eastern Canada, the Great Lakes region and northeastern United States: identifying, harvesting and culture of baitfishes, crayfishes, frogs and leeches. University of Toronto Press. Toronto, ON. iv + 437 pp. |
| Wismer, D.A. and A.E. Christie. 1987. Temperature relationships of Great Lakes fishes: a data compilation. Great Lakes Fish. Comm. Spec. Pub. 87-3. 195 pp. |
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