Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
marina bottenlevande; djupintervall 0 - 73 m (Ref. 50610). Temperate
North Pacific: Attu Island, Alaska to northern Washington, USA.
Size / Vikt / Age
Könsmognad: Lm ? range ? - ? cm
Max length : 8.0 cm TL hane/ej könsbestämd; (Ref. 48798)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 7 - 8; Mjukstrålar i ryggfenan (totalt) : 19 - 21; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 14 - 15. Spinous dorsal short with anterior spines longest; caudal slightly rounded; pectorals rounded, lower 8 rays exserted, middle rays lengthened reaching anal insertion; pelvic fins reaching anus (Ref. 6885). Color pale brown, lighter ventrally; dark band through eye; eye and cirrus black; dorsal fins speckled, with spinous fin darker; usually 4 dark saddles across back, and dark band at base of caudal fin; posterior edge of caudal darker (Ref. 6885). Recognizable by having a combination of gill membranes fused to isthmus, strong longitudinal depression in occiput, scales embedded in papillae covering body except in axilla, moderate-sized spinous dorsal, second dorsal with fewer than 22 rays, and a black band through eye (Ref. 6885).
Body shape (shape guide): fusiform / normal.
Occurs near shore and to 73 m depth, on sand and rock bottoms and shallow exposed areas (Ref. 2850).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
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 2025-1)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 3.5 - 11.1, mean 7.5 °C (based on 214 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00439 - 0.02741), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 4.0 ±0.7 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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