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Perciformes/Zoarcoidei (Eelpouts and pricklebacks) >
Stichaeidae (Pricklebacks) > Xiphisterinae
Etymology: Anoplarchus: Greek, ana = up + Greek, oplon = shield + Greek, archos = anus (Ref. 45335).
More on author: Gill.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino demersale; distribuzione batimetrica 1 - 30 m (Ref. 2850). Temperate; 66°N - 32°N
Eastern Pacific: Pribilof Islands, Alaska to Santa Rosa Island and Trinidad Bay, southern California, USA.
Dimensione / Peso / Età
Maturità: Lm ? range ? - ? cm
Max length : 20.0 cm TL maschio/sesso non determinato; (Ref. 2850)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 55 - 58; Raggi dorsali molli (totale) : 0; Spine anali: 0; Raggi anali molli: 39 - 40; Vertebre: 58 - 61. Caudal with convex outer margin (Ref. 6885). Color very variable- may be light to dark gray with olivaceous overtones, brown to dark brown with or without reddish overtones, or purple to almost black. Females are less varied in color, but show more pattern, usually having green grayish backgrounds with brownish reticulations, or dark brownish backgrounds with subdued reticulation. Belly pale. In the males, the cockscomb and under surface of head are pale, rather yellowish, and without speckling. In the female, the head is more speckled and mottled. There is a gray bar across the base of the caudal peduncle. At breeding season, the male develops bright orange colors on its anal and pectoral fins, and reddish on the caudal and dorsal fins (Ref. 6885).
Facultative air-breathing (Ref. 126274); Usually found in intertidal areas under rocks (Ref. 2850). May remain out of water under rocks or seaweed (Ref. 31184). Green algae is an important food item but may also feed on polychaete worms, crustaceans and mollusks (Ref. 6885). Breathes air (Ref. 31184) and can remain out of water for 15-25 hours if kept moist (Ref. 51276).
Spawning individuals are territorial. The female guards the egg mass deposited between rocks and shells by bending her body over the eggs. She fans the eggs by moving the posterior part of her body (Ref. 6885). In the aquarium, males mate with several females (Ref. 39998).
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): 5.9 - 13.4, mean 8.9 °C (based on 428 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=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 2.9 ±0.1 se; based on diet studies.
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (tm=2-3; Fec=2,700).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (10 of 100).
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