Actinopteri (ray-finned fishes) > Salmoniformes
(Salmons) > Salmonidae
(Salmonids) > Salmoninae
Etymology: Oncorhynchus: Greek, onyx, -ychos = nail + Greek, rhyngchos = snout (Ref. 45335).
More on author: Jordan.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Temperate; 37°N - 36°N
North America: Upper Kern River basin, Tulare and Kern counties in California, USA. Previously, two subspecies were recognized: Oncorhynchus aguabonita gilberti in Main and Little Kern rivers; Oncorhynchus aguabonita aguabonita in South Fork Kern River.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 71.0 cm TL male/unsexed; (Ref. 5723); common length : 29.8 cm TL male/unsexed; (Ref. 12193); max. published weight: 5.0 kg (Ref. 4699); max. reported age: 7 years (Ref. 12193)
Inhabits clear, cool headwaters, creeks, and lakes at elevations above 2100 m. Oviparous (Ref. 205). Eggs are buried in unguarded nests (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairing (Ref. 205). Reproductive strategy: synchronous ovarian organization, determinate fecundity (Ref. 51846).
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. 125652)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00496 - 0.01837), b=3.03 (2.87 - 3.19), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.45 se; based on food items.
Generation time: 5.8 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=7).
Fishing Vulnerability (Ref. 59153
): Moderate to high vulnerability (52 of 100).