Overview

Comprehensive Description

Biology

Inhabit cool streams. Feeds on aquatic insects (Ref. 54729). Survives well in aquarium conditions and the pink lateral band of mature males make them attractive for native fish aquaria (Ref. 54726).
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Distribution

Range Description

Range encompasses the upper Mississippi, Ohio, and Great Lakes drainages, from south-central Canada to northern Alabama and Georgia and east to eastern Lake Erie.
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North America: primarily in upper Mississippi and Ohio drainages, U.S.A and Manitoba, Canada.
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Eastern and central U.S.A.
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Physical Description

Size

Max. size

8.0 cm NG (male/unsexed; (Ref. 54729))
  • Smith, G.R. (rev.) 2004 Fishes of the Great Lakes region, Revised edition. University of Michigan Press. Ann Arbor, Michigan. 276 p. (Ref. 54729)
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Type Information

Syntype for Rhinichthys meleagris
Catalog Number: USNM 120291
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): D. Rauch
Year Collected: 1854
Locality: Burlington, Iowa, Des Moines County, Iowa, United States, North America
  • Syntype:
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Habitat includes rocky runs and pools of headwaters, creeks, and small rivers (Page and Burr 2011).

Systems
  • Freshwater
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Environment

pelagic; freshwater; depth range 2 - 5 m (Ref. 54726)
  • Stewart, K.W. and D.A. Watkinson 2004 The freshwater fishes of Manitoba. University of Manitoba Press, Winnipeg, Manitoba. 276 p. (Ref. 54726)
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Trophic Strategy

Prefers current: may be associated with lower water velocities but mostly moderately fast channel habitats (15-50 cm/sec), 2.5-5 meter depth, gravel to rubble substrate in Manitoba Escarpment streams, Less common in large rivers and along the shorelines of lakes; on sand, and in water usually less than 1 meter deep. A benthic-feeding predator of aquatic insect larvae; plant material may comprise up to 25% of the diet, fish eggs are taken as well (Ref. 54726).
  • Stewart, K.W. and D.A. Watkinson 2004 The freshwater fishes of Manitoba. University of Manitoba Press, Winnipeg, Manitoba. 276 p. (Ref. 54726)
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
NatureServe

Reviewer/s
Smith, K. & Darwall, W.R.T.

Contributor/s

Justification
Listed as Least Concern in view of the large extent of occurrence, large number of subpopulations, large population size, and lack of major threats. Trend over the past 10 years or three generations is uncertain but likely relatively stable, or the species may be declining but not fast enough to qualify for any of the threatened categories under Criterion A (reduction in population size).
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Population

Population
This species is represented by a large number of subpopulations and locations.

Total adult population size is unknown but relatively large.

Trend over the past 10 years or three generations is uncertain but likely relatively stable or slowly declining.

Population Trend
Stable
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Threats

Major Threats
Localized threats may exist, but on a range-wide scale no major threats are known.
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Least Concern (LC)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
Currently, this species is of relatively low conservation concern and does not require significant additional protection or major management, monitoring, or research action.
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Wikipedia

Western blacknose dace

Western blacknose dace (Rhinichthys obtusus) is a species of ray-finned fish in the genus Rhinichthys.

References

  1. ^ Froese, Rainer, and Daniel Pauly, eds. (2006). "Sinibrama obtusus" in FishBase. April 2006 version.


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