Actinopteri (ray-finned fishes) > Perciformes/Zoarcoidei
(Eelpouts and pricklebacks) > Stichaeidae
(Pricklebacks) > Xiphisterinae
Etymology: Xiphister: Greek, xiphos = armed with sword (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 8 - 12 m (Ref. 51666), usually - m (Ref. ). Subtropical; 0°C - ; 59°N - 27°N, 156°W - 114°W
Eastern Pacific: Kodiak Island, Alaska to Rio Santo Tomas, northern Baja California, Mexico.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 30.5 cm TL male/unsexed; (Ref. 4925)
(total): 65 - 73;
soft rays: 40 - 52. Caudal rounded; pectorals as minute flaps (Ref. 6885). Dark reddish brown to black with head pale enough to display 3 dark light-edged bands radiating from each eye; light band sometimes prominent across base of caudal fin and extending on dorsal and anal fins (Ref. 6885).
Juveniles and adults inhabit intertidal areas down to 8 m depth (Ref. 2850); Individuals to 2 cm in length have been taken from surface waters (Ref. 6885). Found under rocks and in gravel areas (Ref. 2850). May remain out of water under rocks or seaweed (Ref. 31184). Breathe air (Ref. 31184) and can stay out of water for 10-23 hours if kept moist (Ref. 51276). Oviparous, eggs are laid in several clumps or masses which are guarded by the male (Ref. 58332).
Eggs are laid in several clumps or masses which are guarded by the male (Ref. 58332).
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. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 8.9 - 14, mean 10.1 °C (based on 169 cells).
Phylogenetic diversity index (Ref. 82805
= 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
Trophic level (Ref. 69278
): 2.5 ±0.2 se; based on diet studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=2.5; Fec=1,700).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (31 of 100) .