Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cyprinidae
(Minnows or carps) > Leuciscinae
Etymology: Notemigonus: Greek, noton = back + Greek, gonia = angled (Ref. 45335); crysoleucas: notemigonus, angled back; cryso, meaning gold; and leucas, white (Ref. 10294).
Environment / Climate / Range
Freshwater; brackish; demersal; depth range 10 - ? m. Subtropical; ? - 35°C (Ref. 35682); 52°N - 25°N
Length at first maturity / Size / Weight / Age
Maturity: Lm 6.4  range ? - ? cm
Max length : 32.0 cm TL male/unsexed; (Ref. 86798); common length : 14.4 cm TL male/unsexed; (Ref. 12193); max. reported age: 9 years (Ref. 72462)
soft rays: 8 - 19. Body extremely compressed; lateral line strongly decurved; scaleless keel along belly from pelvic to anal fin; dorsal- fin origin behind pelvic-fin origin; mouth small, upturned on pointed snout; appears silver in clear and turbid water, and gold side and fins in coffee-colored water; fins red in southern hemisphere; dusky stripe along side, herringbone lines on upper side of young. Scales on lateral line 44-54; dorsal fin with 7-9 rays; anal fin with 8-19 rays, usually 11-14; rakers on 1st gill arch 17-19; and pharyngeal teeth 0,5-5,0 (Ref. 86798).
North America: Atlantic and Gulf Slope drainages from Nova Scotia in Canada to southern Texas, USA; Great Lakes, Hudson Bay (Red River), and Mississippi River basins west to Saskatchewan in Canada, and Montana, west Oklahoma and Texas in USA.
Inhabits vegetated lakes, ponds, swamps, backwaters and pools of creeks and small to medium rivers (Ref. 86798). Can tolerate low oxygen levels, high turbidity and high temperature; omnivorous but principally feed on plankton, insects and mollusks (Ref. 27549).
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. (Ref. 86798)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: minor commercial; aquaculture: commercial; aquarium: public aquariums; bait: usually
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.00806 - 0.02060), b=3.05 (2.92 - 3.18), based on LWR estimates for species & Subfamily-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.7 ±0.1 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=2; tmax=5; Fec=200,000).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (31 of 100) .