Banff longnose dace
The Banff longnose dace (Rhinichthys cataractae smithi) was a diminutive (about five cm. long) version of the eastern longnose dace, its range restricted to a small marsh fed by two hot springs on Sulphur Mountain in Banff National Park in Banff, Alberta.
| Banf Longnose Dace | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Cypriniformes |
| Family: | Cyprinidae |
| Genus: | Rhinichthys |
| Species: | |
| Subspecies: | †R. c. smithi |
| Trinomial name | |
| †Rhinichthys cataractae smithi Nichols, 1916 | |
The development of a popular thermal swimming pool at the Cave and Basin eventually led to pollution of the dace's habitat. Deliberate introduction of mosquitofish in the 1920s was followed by various tropical fish (and aquarium plants) which reproduce year-round in the marsh, while the Banff longnose dace only spawned once a year. The exotic fish also out-competed the dace for food and preyed on unhatched eggs. The few remaining Banff longnose dace hybridized with the Eastern longnose dace from the nearby Bow River. In 1981 a research study showed that the habitat destruction and the introduction of the non-native fish threatened the dace. It is hypothesized that this Banff subspecies' unique genetic structure was irreversibly mixed with another subspecies (termed introgressive hybridization), and by 1986 it had disappeared and was declared extinct in April 1987 by COSEWIC.[1] Currently a study is underway to clarify the taxonomic classification of this putative subspecies.
See also
References
- "Banff Longnose Dace (Rhinichthys cataractae smithi)". Species at risk public registry. Government of Canada. 2019-09-24. Retrieved 2019-10-11.
This is a stub template. A brief explanation of these templates follows; for full details please consult Wikipedia:Stub.
What is a stub?
A stub is an article containing only a few sentences of text which is too short to provide encyclopedic coverage of a subject.
How is a stub identified?
- If possible, try to find the most appropriate stub template for the article. A full list can be found at Wikipedia:WikiProject Stub sorting/List of stubs.
- More than one stub template may be used, if necessary, though no more than four should be used on any article.
- Place a stub template at the very end of the article, after the "External links" section, any navigation templates, and the category tags. As usual, templates are added by including their name inside double braces, e.g.
{{stub}}.
Further information
Further information can be found at:
- Wikipedia:Stub
- Wikipedia:WikiProject Stub sorting
New stub templates and categories (collectively "stub types") should not be created without prior proposal at Wikipedia:WikiProject Stub sorting/Proposals. This allows for the proper coordination of all stub types across Wikipedia, and for the checking of any new stub type for possible problems prior to its creation.
See also
- Template:Empty section – To flag an empty section as a stub section
- Template:Expand section – To flag sections selectively as incomplete
- Template:Data missing – To flag missing information or other data
- Wikipedia:Content assessment