Macrhybopsis storeriana
Silver chub
Image of Macrhybopsis storeriana

Photo by Konrad Schmidt 

Key Characteristics

The silver chub is a slender, bright silver minnow with a fairly compressed body. Its barbell is in the corner of its subterminal mouth. It has a large eye on the upper half of its head and a short, rounded snout.

Status and Rank

  • State Status: SC
  • State Rank: S1
  • Global Rank: G5

Occurrences

County NameNumber of OccurrencesYear Last Observed
Macomb11979
Monroe22000
St. Clair21985
Wayne31985
Distribution map for Macrhybopsis storeriana

Updated 7/21/2017. 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

Silver chubs are typically found in deep waters of low-gradient streams and rivers as well as in lakes. This species prefers pools with clean sand and fine gravel substrates but will move into riffles to avoid silt. However, they have been found in silty areas but it is unknown if they will survive for long periods in silt (Smith 1979, Scott and Crossman 1973). In lakes, they are found at depths less than 10 m.

Specific Habitat Needs

Often deeper habitats, 9-12 m needed in River (5th-6th order), Pool, River (5th-6th order), Run

Natural Community Types

Methodology

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

To effectively manage for preferred habitats of the silver chub a watershed approach to minimize sediments and nutrient inputs is needed. Threats to this species need to be resolved.

Active Period

Spawning from first week of May to fourth week of June

Survey Methods

Page Citation

Michigan Natural Features Inventory. 2007. Rare Species Explorer (Web Application). Available online at http://mnfi.anr.msu.edu/explorer [Accessed Nov 17, 2017]

More Information

See MNFI Species Abstract

References

Survey References

Technical References

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