Shortmast sculpin (Nautichthys robustus) fish species and information / pictures of Shortmast sculpin - Nautichthys robustus

Shortmast sculpin (Nautichthys robustus) fish species information

Scientific Name
Nautichthys robustus

Common Name
Shortmast sculpin

Biology
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).

Classification

Classified By
Peden, 1970
Class
Ray-finned fishes (Actinopterygii)
Order
Scorpionfishes and Flatheads (Scorpaeniformes)
Family
Sea ravens or sailfin sculpins (Hemitripteridae)

Distribution

Region
North Pacific
Distribution
North Pacific: Attu Island, Alaska to northern Washington, USA.
Range
Unknown

Environment

Climate
Temperate
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
0 m
Depth To - meters
73 m
Zone
demersal
Environment
Marine; demersal; depth range 0 - 73 m (Ref. 50610)
Trophic Level
3.57 s.e. 0.64 Based on size and trophs of closest relatives
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
8.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.6289 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Unknown
Vulnerability
Low vulnerability (10 of 100)
Resilience
Unknown
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated