Environment: milieu / climate zone / depth range / distribution range
Οικολογία
Θαλασσινό(ά); ωκεανόδρομο(ς) (Ref. 51243); εύρος βάθους 0 - 18 m (Ref. 2850). Temperate; 58°N - 24°N, 155°W - 111°W
Eastern Pacific: Alaska to Magdalena Bay, Baja California. Not common north of Point Conception (Ref. 11484).
Μέγεθος / Βάρος / Age
Maturity: Lm ?  range ? - ? cm
Max length : 145 cm FL αρσενικό/απροσδιόριστο; (Ref. 40637); μεγ. δημοσιευμένο βάρος: 12.0 kg (Ref. 40637); μεγ. αναφερόμενη ηλικία: 12 έτη (Ref. 56049)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 6; Μαλακές ραχιαίες ακτίνες (συνολικά) : 9 - 10; Εδρικές άκανθες: 1; Μαλακές εδρικές ακτίνες: 8 - 9. Color bluish or brownish dorsally, silvery ventrally (Ref. 6885).
Usually near shore or near the surface (Ref. 2850). Often in small schools (Ref. 2850). Young enter bays (Ref. 2850). Feed mainly on other fishes (Ref. 2850). Pelagic spawners (Ref. 56049). Migrate south from the California coast during autumn, but may remain in front of the Mexican coast throughout the year (Ref. 9345). Utilized fresh, dried or salted and frozen; eaten broiled and baked (Ref. 9988). Considered as potentially dangerous due to its large, sharp teeth and aggressive disposition, though there are no reports of attacks (Ref. 9988).
Pelagic spawner (Ref. 56049).
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref. 2850)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Traumatogenic (Ref. 13513)
Human uses
αλιεία: Εμπορικό(ά); αλιεία αναψυχής: ναί
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Preferred temperature (Ref.
123201): 8.9 - 23.1, mean 12.4 °C (based on 212 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00329 - 0.01525), b=2.92 (2.75 - 3.09), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 4.5 ±0.80 se; based on food items.
Generation time: 7.9 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Ελαστικότητα (Ref.
120179): Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (K=0.14; tm=2-3; tmax=12; Fec=42,000).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (69 of 100).