Ptychocheilus oregonensis  (Richardson, 1836)

Northern pikeminnow
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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: Ptychocheilus: Greek, ptyx, ptychos = fold + Greek, cheilos = lip (Ref. 45335);  oregonensis: oregonensis meaning - of Oregon (Ref. 1998).

Environment / Climate / Range Ecology

Freshwater; benthopelagic.   Temperate; 55°N - 39°N

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 63.0 cm TL male/unsexed; (Ref. 5723); common length : 22.0 cm TL male/unsexed; (Ref. 12193); max. published weight: 13.0 kg (Ref. 1998); max. reported age: 11 years (Ref. 72462)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 9-10; Anal soft rays: 8 - 9; Vertebrae: 44 - 46. Mot deep bodied, greatest depth 16.6% (TL), belly gently rounded in mature individuals. Head moderately long, its length 22.8% (TL); eye small in adults, 17.6% of head length, but larger in young 7.6 cm long, when 25.2% of head length; snout long, 33.1% of head length of adults; interorbital width 29.6% of head length; mouth large, extending back to below anterior margin of eye. All fins clear. Pelvic axillary process usually a ridge. Peritoneum present. Nuptial tubercles fine, on head and back, on pectoral and pelvic fins and sometimes on the caudal fin. Dark green or green-brown dorsally becoming silvery white or cream ventrally. The lower fins of the males become yellow or yellow-orange during spawning period.

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

North America: Pacific drainages from Nass River in British Columbia, Canada to Columbia River in Nevada, USA; Harney River basin in Oregon, USA; Peace River system (Arctic basin) in British Columbia and Alberta, Canada.

Biology     Glossary (e.g. epibenthic)

Occurs in lakes, ponds and occasionally in runs of small to large rivers. Feeds on fishes, terrestrial insects, plankton, aquatic insect larvae, and crustaceans while inshore; feeds mostly on fishes while offshore (Ref. 1998). Male squawfish, prickly sculpins, and newts prey on the eggs (Ref. 1998). Edible but not well appreciated (1998).

Main reference Upload your references | References | Coordinator | Collaborators

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p.

IUCN Red List Status (Ref. 90363)

Threat to humans

  Harmless




Human uses

Gamefish: yes; aquarium: public aquariums
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00427 - 0.01623), b=3.11 (2.95 - 3.27), based on LWR estimates for species & Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  4.3   ±0.8 se; Based on diet studies.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (K=0.08-0.21).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (50 of 100) .
Price category (Ref. 80766):   Unknown.