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🌊 Marine 🌡️ Temperate

Shortmast sculpin

Nautichthys robustus Peden, 1970
Max Length
8 cm
Max Weight
-
Lifespan
-
Trophic Level
4
Depth
0–73 m
Climate
Temperate
Resilience
-
Vulnerability
17.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Shortmast sculpin (Nautichthys robustus), first described by Peden, 1970 is a small fish in the family Nautichthyidae (order Perciformes). Adults typically reach 8.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 0 to 73 metres. It occurs in Temperate waters. Diet is predominantly piscivorous, targeting other fish and larger prey.

Scientific Name
Nautichthys robustus
Authority
Peden, 1970
Habitat
Marine
Climate
Temperate
Body Shape
Fusiform / normal
Max Length
8 cm
Depth Range
0–73 m
Trophic Level
4
Vulnerability
17.00/100
Salinity
30–40 ppt

🐟 Physical Description

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 . 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 . 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 .: fusiform / normal.

🌀 Behaviour

Behavioural data for Shortmast sculpin is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; demersal; depth range 0 - 73 m . Temperate North Pacific: Attu Island, Alaska to northern Washington, USA.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
4±0.7

📐 Morphometrics

Length–Weight Relationship: W = 0.01122 × L3.04 (TL)
Max TL
8cm
Dorsal Spines
8
Dorsal Rays
20
Anal Rays
15

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Fishing Vulnerability
17.00/100
Low vulnerability
Trophic Level
4
Apex / Top predator
Body Shape
Fusiform / normal
Climate Zone
Temperate
Described By
Peden, 1970

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