Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino demersale; distribuzione batimetrica 0 - 18 m (Ref. 2850). Subtropical; 59°N - 34°N, 156°W - 118°W
Eastern Pacific: Port San Juan, southeastern Alaska to Santa Cruz Island, southern California, USA.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 58.0 cm TL maschio/sesso non determinato; (Ref. 2850); Età massima riportata: 11 anni (Ref. 56049)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 71 - 77; Raggi dorsali molli (totale) : 0; Spine anali: 0; Raggi anali molli: 46 - 50. Caudal small and rounded, directed upward; pectorals as minute flaps (Ref. 6885). Greenish black with several dusky white bars on posterior part of body, 2 dark bands diverging back from each eye, each band double with a paler center (Ref. 6885).
Facultative air-breathing (Ref. 126274); Found in rocky areas, from intertidal to 18 m depth, mostly on exposed coast (Ref. 2850). May remain out of water under rocks or seaweed (Ref. 31184). Feed mainly on algae (Ref. 6885). Oviparous, eggs are laid in several clumps or masses which are guarded by the male (Ref. 58332). Breathe air (Ref. 31184) and can stay out of water for 17-23 hours if kept moist (Ref. 51276).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Female lays eggs in a cluster under a rock, male guards the egg mass by wrapping his body around it (Ref. 2850). Also Ref. 101194.
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Temperatura preferita (Fonte Biblio.
123201): 8.9 - 12.8, mean 10.1 °C (based on 164 cells).
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 2.2 ±0.1 se; based on diet studies.
Resilienza (Fonte Biblio.
120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (tm=5; tmax=11; Fec-9,500).
Vulnerabilità della pesca (Ref.
59153): Moderate vulnerability (43 of 100).
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