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Nautichthys robustus, Shortmast sculpin
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Shortmast sculpin
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drawing shows typical species in Agonidae.
Teleostei (teleosts) >
Perciformes/Cottoidei
(Sculpins) >
Agonidae
(Poachers) > Hemitripterinae
Etymology:
Nautichthys:
Greek, nautes = sailor + Greek, ichthys = fish (Ref.
45335
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 0 - 73 m (Ref.
50610
). Temperate
North Pacific: Attu Island, Alaska to northern Washington, USA.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 8.0 cm TL male/unsexed; (Ref.
48798
)
Dorsal
spines
(total): 7 - 8;
Dorsal
soft rays
(total): 19-21;
Anal
spines
: 0;
Anal
soft rays
: 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
).
Occurs near shore and to 73 m depth, on sand and rock bottoms and shallow exposed areas (Ref.
2850
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
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
)
Not Evaluated
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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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
= 0.6289 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00441 - 0.02728), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.0 ±0.7 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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Page last modified by :
mrius-barile
- 20 July 2016
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|