American redfin orfe

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American redfin orfe
American redfin orfe

American redfin orfe

Systematics
without rank: Otophysa
Order : Carp-like (Cypriniformes)
Subordination : Carp fish-like (Cyprinoidei)
Family : White fish (Leuciscidae)
Genre : Cyprinella
Type : American redfin orfe
Scientific name
Cyprinella lutrensis
( Baird & Girard , 1853)

The American red fin orfe ( Cyprinella lutrensis , syn .: Notropis lutrensis ), engl. Red Shiner, or Red-Horse Minnow, is a small carp fish native to North America.

description

Cyprinella lutrensis has ray fins (fin formula: dorsal fin 7–8, anal fin 8–10), an elongated, laterally somewhat compressed body and becomes about 10 centimeters long. Both females and males have silver-colored flanks and a whitish underside of the abdomen. The males develop a striking color pattern at spawning time, which gave them the name Red Shiner. The flanks are pink to purple with blue iridescent color facets. The fins then have a blood red color, except for the dorsal fin, which remains dark. Cyprinella lutrensis is often confused with the European rudd , roach or orfe due to their similarity .

distribution

Distribution of the Red Shiner in the USA; brown = original occurrence;
red = imported stocks

Cyprinella lutrensis was first caught in Otter Creek, Arkansas , its name lutrensis, Latin "lutra" means otter. American redfin fishes originally come from the Mississippi basin, from southern Wisconsin and eastern Indiana , via South Dakota and Wyoming to southern Louisiana . They were introduced in Arizona , Alabama , California , Colorado , Illinois , Georgia , Nebraska , North Carolina South Carolina , Massachusetts , Utah , Virginia , Nevada, and New Mexico . The fish can also be found in northern Mexico. The subspecies Cyprinella lutrensis blairi (English: Maravaillas Red Shiner) endemic in the Rio Grande has become extinct. American redfin fishes are adapted to a wide range of different water habitats, for example they can be found in oxbow lakes and oxbow lakes of rivers, retention basins, reservoirs, estuaries and large rivers that have a sandy or loamy bottom, rapids and deep stretches of water. Red Shiner tolerate cloudy and churned waters with a high substrate content, but are sensitive to acidic waters. American redfin fishes are considered generalists in terms of their habitat and can also spread to marginal locations such as canalized ditches, polluted waters and periodically dry waters where other fish species no longer have living conditions.

Way of life

American redfin traps can live up to three years. They are omnivorous and feed on algae , aquatic invertebrates, and insects that fall into the water. Cyprinella lutrensis is known to act as a spawning predator and eat clutches of other fish species, especially in waters where the species was introduced to humans. The spawning season of the American redfin fish takes place in the months from mid-April to September with the peak in midsummer. Instead of laying the spawn in crevices, like other representatives of the genus Cyprinella , American red-finned frogs look to the stone ground and aquatic vegetation to lay their eggs. Females lay up to 16 spawning bands with around 71 eggs per spawning band. American redfin fishes often spawn together with other species such as the blue shiner or the blacktailed shiner, so that the species can easily hybridize . They live in schools in mean water or near the surface.

use

American redfin traps are often used in the United States as bait fish when fishing for predatory fish because of their vivid color. Mainly introduced into new waters by anglers in this way, they have often multiplied strongly in their new habitat and decimated endemic fish species by eating spawn. Due to their great adaptability, even to unfavorable locations, they have displaced many other fish species. By hybridizing with the Blacktailed Shiner ( Cyprinella venusta stigmatura ), which is endemic to the Coosa River in Georgia, they have diluted the gene pool of this species. The American redfin fishes are well suited as undemanding and colorful ornamental fish kept in groups for a cold water aquarium.

Notes and individual references

  1. ↑ a b c d e f g Red Shiner (Cyprinella lutrensis). on the Texas Parks and Wildlife website .
  2. ↑ a b c American redfin orfe on Fishbase.org (English)
  3. ^ RL Mayden: Phylogenetic studies of North American minnows, with emphasis on the genus Cyprinella (Teleostei: Cypriniformes). The University of Kansas Museum of Natural History, Miscellaneous Publication, 1989, Vol. 80, pp. 1-189.
  4. ↑ Cyprinella lutrensis blairi: Maravillas red shiner. Retrieved December 25, 2018 .
  5. ↑ RT Farringer III, AA Echelle, SF Lehtinen: Reproductive cycle of the red shiner, Notropis lutrensis in central Texas and south central Oklahoma. In: Transactions of the American Fisheries Society. 1979, 108, pp. 271-276.
  6. ↑ JB Ruppert, RT Muth, TP Nesler: Predation on Fish Larvae by Adult Red Shiner, Yampa and Green Rivers, Colorado. In: The Southwestern Naturalist. 1993 38 (4) pp. 397-399.
  7. ^ WF Gale: Indeterminate fecundity and spawning behavior of captive red shiners - fractions, crevice spawners. In: Transactions of the American Fisheries Society. 1986, 115, pp. 429-437.
  8. ↑ FB Cross: Handbook of Fishes of Kansas. University of Kansas Museum of Natural History, Lawrence 1967, p. 357.
  9. ^ L. Nico, Fuller: Cyprinella lutrensis . USGS Nonindigenous Aquatic Species Database, Gainesville (FL) 2010.
  10. ↑ David M. Walters, Michael J. Blum: Red Shiner Invasion of the Upper Coosa River System: Dynamics and Ecological Consequences ( Memento of January 8, 2012 in the Internet Archive )
  11. ↑ American red fin orfe - Cyprinella lutrensis (Baird & Girard, 1853). ( Memento of the original from June 12, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. to: zierfischverzeichnis.de @1@ 2Template: Webachiv / IABot / www.zierfischverzeichnis.de
  12. ^ Cyprinella lutrensis - (BAIRD & GIRARD, 1853).  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. on: aquanet.de @1@ 2Template: Dead Link / www.aquanet.de  

Web links

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