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Perciformes/Cottoidei (Sculpins) >
Agonidae (Poachers) > Bothragoninae
Etymology: Bothragonus: Greek, bostrykos = cure of lack of hair + Greek, gono = birth (Ref. 45335); swanii: Named after James G. Swan of Port Townsend, Washington (Ref. 6885).
Eponymy: James Gilchrist Swan (1818–1900) of Port Townsend, Washington, was an anthropologist, judge, political advisor, artist and schoolteacher, as well as being an Indian Agent and ethnologist and one of the most colorful personalities of Washington State [...] (Ref. 128868), visit book page.
More on author: Steindachner.
Environment: milieu / climate zone / depth range / distribution range
Ökologie
seewasser demersal; tiefenbereich 0 - 18 m (Ref. 2850). Temperate; 60°N - 35°N, 155°W - 121°W
Eastern Pacific: Kodiak Island, Alaska to Carmel Bay, Monterey County, California, USA (southernmost range confirmed by J.R. Wolfe, pers. comm. 09/02).
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 8.9 cm TL Männchen/unbestimmt; (Ref. 2850)
Rückenflossenstacheln (insgesamt) : 2 - 5; Rückenflossenweichstrahlen (insgesamt) : 4 - 5; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 4 - 5; Wirbelzahl: 32. Dorsal fins small; caudal fin rounded; pectoral fins large, supported well out from sides of body; pelvic fins very narrow and rays appear fused (Ref. 6885). Color very variable, depending on background; brown with dark bars, orange with bluish bars, or scarlet with brown bars (Ref. 6885).
Inhabits intertidal areas and to 18 m depth (Ref. 2850). Frequently caught in tide pools (Ref. 28197). Its food consists mainly of tiny crustaceans (shrimp and crab-like creatures) which are picked from the bottom or very close to it (Ref. 4930). Demersal spawner in nearshore habitats (Ref. 56049).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Demersal spawners.
Kanayama, T., 1991. Taxonomy and phylogeny of the family Agonidae (Pisces: Scorpaenifomes). Mem. Fac. Fish. Hokkaido Univ. (38)1-2:1-199. (Ref. 28197)
IUCN Rote Liste Status (Ref. 130435: Version 2024-2)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
Zusatzinformationen
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Internet Quellen
Estimates based on models
Preferred temperature (Ref.
123201): 8.4 - 12.8, mean 9.8 °C (based on 177 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.6 ±0.59 se; based on food items.
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
