Teleostei (teleosts) >
Cypriniformes (Carps) >
Leuciscidae (Minnows) > Laviniinae
Etymology: Ptychocheilus: Greek, ptyx, ptychos = fold + Greek, cheilos = lip (Ref. 45335).
More on author: Girard.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal; potamodromous (Ref. 51243). Temperate; 42°N - 31°N
North America: Colorado River drainage in USA (Wyoming, Colorado, Utah, New Mexico, Arizona, Nevada and California) and Mexico. Now mostly restricted to Utah and Colorado; and extirpated from the southern portion of the range by the construction of large dams.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 180 cm TL male/unsexed; (Ref. 5723); common length : 52.5 cm TL male/unsexed; (Ref. 12193); max. reported age: 12 years (Ref. 12193)
Anal soft rays: 9. Scales very small with 76-97, usually 80-87 scales on lateral line and 18-23 scales above lateral line; dorsal fin usually with 9 rays; anal fin with 9 rays (Ref. 86798).
Body shape (shape guide): elongated.
Inhabits pools of medium to large rivers. Large individuals usually occur in deep, flowing rocky or sandy pools (Ref. 86798).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. 130435: Version 2025-2)
Threat to humans
Harmless
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