Smallmouth bass

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Smallmouth Bass
Conservation status: Secure
Missing image
Micropterus_dolomieu.jpg
Smallmouth bass


Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Actinopterygii
Order:Perciformes
Family:Centrarchidae
Genus:Micropterus
Species:M. dolomieu
Binomial name
Micropterus dolomieu
Lacpde, 1802

The smallmouth bass (Micropterus dolomieu) is a species of freshwater fish in the sunfish family (Centrarchidae) of order Perciformes. It is the type species of its genus. One of the black basses, it is native to a wide area throughout eastern North America, encompassing the upper and middle Mississippi River basin, the Saint Lawrence RiverGreat Lakes system, and up into the Hudson Bay basin.

There smallmouth bass is marked by is a series of dark bars on the sides, and its upper jaw does not extend past the eye. It grows to a maximum recorded overall length of 69 cm (27 in), weighing up to 5.4 kg (12 lb). Specimens have been recorded living up to 26 years.

M. dolomieu is found only in clear water, preferring shallow, rocky-bottomed areas of lakes and rivers. Because it is relatively intolerant of any type of pollution, the smallmouth bass is a good natural indicator of a healthy environment. Carnivorous, its diet comprises crayfish, insects, and smaller fish, the young also feeding on zooplankton.

The female can lay up to 21,000 eggs which are guarded by the male in his nest.

One of the world's most popular game fish, the smallmouth bass is stocked in rivers and lakes throughout the United States, and has been introduced in many countries, sometimes with adverse effects on native fish populations.

References

  • FishBase: Micropterus dolomieu (http://www.fishbase.org/Summary/SpeciesSummary.cfm?genusname=Micropterus&speciesname=dolomieu)
  • ITIS: Micropterus dolomieu (http://www.itis.usda.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=550562)
  • Rohde, F. C., et al. Freshwater Fishes of the Carolinas, Virginia, Maryland, and Delaware. Chapel Hill: University of North Carolina Press, 1994.
  • Whitlock, John. "Micropterus dolomieu: Information (http://animaldiversity.ummz.umich.edu/site/accounts/information/Micropterus_dolomieu.html)". Animal Diversity Web. Ann Arbor: University of Michigan Museum of Zoology, 2004.

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