Plants and Animals

Coregonus reighardi Shortnose cisco

Key Characteristics

This cisco is a elliptically shaped, laterally compressed fish usually less than 250mm in length and covered with large, silvery scales. They are characterized by a short snout that is heavily pigmented. It has a short head and snout with a small terminal mouth.

Status and Rank

US Status:
State Status: X - Presumed extirpated (legally 'threatened' if rediscovered)
Global Rank: GH
State Rank: SH - Possibly extirpated

Occurrences

CountyNumber of OccurrencesYear Last Observed
Chippewa11980
Huron11956
Iosco11982

Information is summarized from MNFI's database of rare species and community occurrences. Data may not reflect true distribution since much of the state has not been thoroughly surveyed.

Habitat

This species was once found in the upper zones of deepwater areas of lakes. Spawning occurred at depths of 35 to 145 m over silt or clay substrates.

Specific Habitat Needs

Silt, clay needed in: Great Lake, Littoral, Midwater.

Natural Community Types

  • Great lake, littoral, midwater
  • Great lake, pelagic, midwater

For each species, lists of natural communities were derived from review of the nearly 6,500 element occurrences in the MNFI database, in addition to herbarium label data for some taxa. In most cases, at least one specimen record exists for each listed natural community. For certain taxa, especially poorly collected or extirpated species of prairie and savanna habitats, natural community lists were derived from inferences from collection sites and habitat preferences in immediately adjacent states (particularly Indiana and Illinois). Natural communities are not listed for those species documented only from altered or ruderal habitats in Michigan, especially for taxa that occur in a variety of habitats outside of the state.

Natural communities are not listed in order of frequency of occurrence, but are rather derived from the full set of natural communities, organized by Ecological Group. In many cases, the general habitat descriptions should provide greater clarity and direction to the surveyor. In future versions of the Rare Species Explorer, we hope to incorporate natural community fidelity ranks for each taxon.

Management Recommendations

This species has not been collected since 1985. Extirpation was mainly due to overfishing.

Active Period

Spawning from fourth week of March to fourth week of May

Spawning from third week of September to third week of October

Survey Methods

Deepwater trawls

Survey Period: From first week of November to fourth week of October

Seines

Survey Period: From first week of November to fourth week of October

Gill nets

Survey Period: From first week of November to fourth week of October

References

Survey References

  • Murphy, B.R. and D.W. Willis, eds. 1996. Fisheries Techniques, 2nd ed. American Fisheries Society, Bethesda. 732pp.

Technical References

  • Bailey, R.M., W.C. Latta, and G.R. Smith. 2004. An Atlas of Michigan Fishes. Museum of Zoology, University of Michigan, No. 192, Ann Arbor. 215p.
  • Becker, G.C. 1983. Fishes of Wisconsin. The University of Wisconsin Press, Madison. 1052 pp.
  • Evers, D.C. 1994. Endangered and Threatened Wildlife of Michigan. The University of Michigan Press, Ann Arbor. 412pp.
  • Scott, W.B. and E.J. Crossman. 1973. Freshwater fishes of Canada. Bulletin 184, Fisheries Research Board of Canada, Ottawa. 966pp.
  • Smith, C.L. 1985. The inland fishes of New York State. New York State Department of Environmental Conservation, Albany. 522pp.