Redside dace
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| Clinostomus elongatus | |
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| Scientific classification Edit this classification | |
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| Binomial name | |
| Template:Taxon infoTemplate:Taxon italics (J. P. Kirtland, 1840)
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| Synonyms[1] | |
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The redside dace (Clinostomus elongatus) is a North American species of freshwater ray-finned fish in the family Leuciscidae.[1] It is a surface-feeding specialist, thus acting as a conduit for nutrient transfers between terrestrial and aquatic environments.[citation needed] This fish is also known as an indicator species as it is sensitive to environmental disturbances.
Taxonomy
American naturalist Jared Potter Kirtland described the redside dace in 1840. The species name elongatus is Latin for "prolonged" or "elongated", referencing the distinctive head and mouth shape.[3]
Description
The redside dace is brightly colored, with a wide red stripe extending from the head to the dorsal fin, running along the middle of the body.[4] A bright yellow stripe generally extends from the head to caudal fin above the red lateral stripe. The back of this fish is generally dark, ranging from green to dark blue. Distinguishing it from other minnows, this species has a very large terminal mouth and protruding lower jaw, which is an effective adaptation for capturing prey from below.[5]
The species' maximum total length is around Template:Cvt[6] but Template:Cvt is the average of adults.[4] Age estimation with scales suggests that redside dace do not live over four years.[4] Within their first year of life, redside dace may attain a length of Template:Cvt by late summer.
The redside dace is similar in appearance to the rosyside dace (Clinostomus funduloides), however the redside dace has a longer and more slender body with brighter red coloration on its sides.[7] The two species are also allopatric.[6]
Distribution
United States
Redside dace are most abundant in Pennsylvania, especially in the upper parts of the Susquehanna River drainage.[8] It is also found in some tributaries of the Laurentian Great Lakes, as well as in the Ohio River drainage and the upper parts of the Mississippi River drainage.[5] Scattered populations exist in the states of Indiana, Michigan, Minnesota, and Wisconsin.[6]
Canada
The distribution of redside dace is mainly limited to southern Ontario with the Two Tree River on St. Joseph Island as an exception.[8] Most populations have been identified in streams draining into the western portion of Lake Ontario, from Pringle Creek near Oshawa to Spencer Creek near Hamilton.[5] Smaller populations exist in the drainages of Lake Simcoe (such as the Holland River system), Lake Erie (Irvine Creek), Berczy Creek in Markham and Lake Huron (Saugeen River system).
Habitat
The species favours slow-moving, cool, and clear headwaters of river systems, with copious overhanging riparian vegetation, especially grasses, forbs, and low shrubs. A preferred stream features a succession of riffles, necessary for spawning, and pools, inhabited outside the breeding season.[9]
Diet
The redside dace is a midwater and surface specialist, regularly consuming terrestrial insects representing families of Empididae and Formicidae and aquatic insects of Chironomidae and order Ephemeroptera.[4][5][10]
Reproduction
Redside dace will opportunistically spawn over gravel nests called chub mounds built by creek chub (Semotilus atromaculatus), hornyhead chubs (Nocomis spp.) or stonerollers (Campostoma spp.). Spawning generally occurs in spring but the exact timing depends on location (or more specifically, latitude and climate) when water temperatures are at or near Template:Cvt.[4] During this time, males will leave pool habitat and begin staging near spawning gravel. Before spawning, males will engage in territorial displays and courtship behaviors. The act of spawning consists of multiple males gathering around a female, where both fish emit gametes simultaneously. The fertilized eggs are non-adhesive and remain in the nest, receiving no further parental care.[5]
Management
Although globally secure with locally abundant populations, the redside dace has declined in many areas of its range; some populations have been extirpated.[4][5] The redside dace is listed as endangered in Indiana[11] and Ontario,[5] as threatened in Michigan,[12] and as special concern in Wisconsin.[13] Declines in redside dace are largely attributed to habitat destruction, more specifically deforestation, urbanization, and water pollution.[4][5] Due to its intolerance for modified habitat, they could be considered an indicator species.[5] Redside dace have limited use by humans but are occasionally kept in aquaria due to its stunning appearance.
References
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- ^ a b Template:Cof genus
- ^ Template:Cite iucn
- ^ Page Module:Citation/CS1/styles.css has no content.Scharpf, Christopher (2025-05-02). "Family LEUCISCIDAE Subfamily POGONICHTHYINAE (American Minnows and Shiners)". The ETYFish Project. Retrieved 2025-05-06.
- ^ a b c d e f g Page Module:Citation/CS1/styles.css has no content.Becker, George C. (1983). Fishes of Wisconsin. Madison, Wisconsin: University of Wisconsin. pp. 446–450. ISBN 978-0-299-08790-6. Retrieved 2025-05-06.
- ^ a b c d e f g h i Page Module:Citation/CS1/styles.css has no content."COSEWIC Assessment and Status Update Report on the Redside Dace" (PDF). 2007. Retrieved 2025-05-06.
- ^ a b c Page Module:Citation/CS1/styles.css has no content.Page, Lawrence M.; Burr, Brooks M., eds. (2011). Peterson field guide to freshwater fishes of North America north of Mexico (2 ed.). Houghton Mifflin Harcourt. ISBN 978-0-547-24206-4.
- ^ Script error: No such module "Cite taxon".
- ^ a b Page Module:Citation/CS1/styles.css has no content."Recovery Strategy for Redside Dace in Ontario 2005 – 2009" (PDF). Redside Dace Recovery Team. 2005-01-31. Retrieved 2008-01-31.
- ^ Page Module:Citation/CS1/styles.css has no content.Goforth, Reuben Ratterree (2000). "Special Animal Abstract for Clinostomus elongatus (redside dace)" (PDF). Michigan Natural Features Inventory. Michigan State University. Retrieved 2025-05-06.
- ^ Page Module:Citation/CS1/styles.css has no content.Daniels, R. A.; Wisniewski, S. J. (1994). "Feeding ecology of redside dace, Clinostomus elongatus". Ecology of Freshwater Fish. 3 (4): 176–183. Bibcode:1994EcoFF...3..176D. doi:10.1111/j.1600-0633.1994.tb00020.x. Retrieved 2025-05-06.
- ^ Page Module:Citation/CS1/styles.css has no content."Indiana Species of Greatest Conservation Need". Indiana.gov. Indiana Department of Natural Resources. 2025. Retrieved 2025-05-08.
- ^ Page Module:Citation/CS1/styles.css has no content."Threatened and endangered species list". Michigan.gov. Michigan Department of Natural Resources. 2025. Retrieved 2025-05-08.
- ^ Page Module:Citation/CS1/styles.css has no content."Wisconsin Endangered and Threatened Species Laws & List". Wisconsin.gov. Wisconsin Department of Natural Resources. 2021. Retrieved 2025-05-08.
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