Notropis texanus
Weed shiner

Key Characteristics

The weed shiner is a small (3.3-5.4 cm), olive-colored species with a dark lateral band which extends to the snout and tip of chin. This shiner has seven anal rays and a small caudal fin spot.

Status and Rank

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

Occurrences

County NameNumber of OccurrencesYear Last Observed
Allegan41947
Calhoun31953
Eaton31927
Ingham11927
Jackson21941
Kalamazoo11935
Ottawa11934
Saginaw21941
Distribution map for Notropis texanus

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

The weed shiner was once found in open, sandy streams, river, and impoundments with submerged aquatic vegetation. In Michigan, they were found mostly in tributary junctions and below dams of major rivers. Populations were locally distributed and rare. Michigan has few river systems capable of supporting this species.

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

Habitat degradation, increased siltation and turbidity from the loss of riverine vegetation, widespread deforestation, and wetland alteration are likely reasons for the extirpation of this species (Smith 1979).

Active Period

Spawning from first week of June 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 21, 2017]

References

Survey References

Technical References

Facebook link