Chrosomus eos
No common name
NS
G5
Collection Details
Specimens
Photos
There are no photos available for this taxon yet.
Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Cypriniformes (Carps and Minnows)
Cyprinidae (Carps and Minnows)
Chrosomus
Chrosomus eos
Description
This species account was compiled from
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Characters
Body shape: elongated. Chrosomus eos is distinguished from a similar species C. erythrogaster by having more rounded, shorter (about equal to eye diameter) snout and more upturned mouth, with chin in front of upper lip. Other characters useful to identify this species include 70-90 lateral scales and red or yellow belly, head, and fins in large males (Ref. 86798).
Distribution
North America: Atlantic, Great Lakes, Hudson Bay, and upper Mississippi, Missouri and Peace-Mackenzie River drainages, from Nova Scotia west to Northwest Territories and British Columbia in Canada; south to northern Pennsylvania, Wisconsin and Nebraska in USA. Isolated population in South Platte River system in Colorado, USA.
Habitat Associations
Freshwater. demersal. Found in: streams, lakes.
Biology
Inhabits lakes, ponds, bogs, and pools of headwaters and creeks. Usually occurs over silt, often near vegetation (Ref. 86798). Feeds mainly on algae, but also on zooplankton and aquatic insects. Preyed upon by fishes, kingfishers and mergansers (Ref. 1998). Spawning occurs in spring or early summer (Ref. 1998). Used as bait in parts of Ontario and Quebec (Ref. 1998).
Max length: 8.0 cm TL; common length: 4.8 cm TL; max age: 3 years.
Reproductive mode: dioecism; fertilization: external; nonguarders (open water/substratum egg scatterers); parental care: none. A female attracts a few males with her darting movements. Together, the group dives into a mass of filamentous algae and release sperm and nonadhesive eggs. The group spawns in several algal masses.
IUCN Red List Status: Least Concern (LC), assessed 2011-11-03. Resilience: High (tmax=3).
Commercial or Environmental Importance
Fisheries: commercial; aquarium: public aquariums.
References
Scott, W.B. and E.J. Crossman (1973) Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184: xi+1-966.
Cochran, P.A., D.M. Lodge, J.R. Hodgson and P.G. Knapik (1988) Diets of syntopic finescale dace, Phoxinus neogaeus, and northern redbelly dace, Phoxinus eos: a reflection of trophic morphology. Environ. Biol. Fishes 22(3):235-240.
Litvak, M.K. and R.I.C. Hansell (1990) Investigation of food habit and niche relationships in a cyprinid community. Can. J. Zool. 68:1873-1879.
Page, L.M. and B.M. Burr (2011) A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p.
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