(Carps) > Leuciscidae
(Minnows) > Laviniinae
Etymology: Ptychocheilus: Greek, ptyx, ptychos = fold + Greek, cheilos = lip (Ref. 45335). More on author: Ayres.
Environment: milieu / climate zone / depth range / distribution range
; acqua dolce demersale. Temperate; 39°N - 35°N
North America: Sacramento-San Joaquin, Pajaro-Salinas, Russian, and Clear Lake drainages in California, USA. Introduced elsewhere in California, including Eel River and tributaries to Morro Bay.
Size / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 140 cm TL maschio/sesso non determinato; (Ref. 5723); common length : 40.0 cm TL maschio/sesso non determinato; (Ref. 12193); Età massima riportata: 9 anni (Ref. 72486)
Raggi anali molli: 8. Dorsal fin usually with 8 rays; anal fin with 8 rays; 38-44 scales on back from head to dorsal fin; 65-78, usually 67-75, scales on lateral line; and 12-15 scales above lateral line (Ref. 86798).
Inhabits rocky and sandy pools and runs of small to large rivers. Usually found in clear, warm streams (Ref. 5723). Voracious minnow with pike-like habits. Small pikeminnows (less than or equal to 7 cm SL) are found in shallow water with cover and lower velocities. The microhabitat use of these juveniles is controlled by the presence of large pikeminnows which connotes intraspecific predation. The microhabitat shift is observed to be significantly influenced by the presence rather than the number of large pikeminnows in the area (Ref. 55069).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
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. (Ref. 5723)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Pesca: scarso interesse commerciale; esca: usually
BibliografiaAcquacolturaProfilo di acquacolturaVarietàGeneticaFrequenze allelicheEreditarietàMalattieElaborazioneNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00692 (0.00314 - 0.01524), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.0 ±0.2 se; based on size and trophs of closest relatives
Resilienza (Ref. 120179
): Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Very high vulnerability (81 of 100) .