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🌊 Marine 🍽️ Edible 🌡️ Subtropical

Light dusky rockfish

Sebastes variabilis Pallas, 1814
Max Length
43.1 cm
Max Weight
-
Lifespan
50 yrs
Trophic Level
3.7
Depth
6–675 m
Climate
Subtropical
Resilience
Very low
Vulnerability
48.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Collection depth between 6-370 m, deepest recorded depth at 675 m. Large adults common along the edge of the continental shelf at 100-300 m where the species is targeted for commercial use. Captured in the offshore trawl fishery. Males and females captured by trawl surveys vary widely in maturity during the summer (May-July) .

Scientific Name
Sebastes variabilis
Authority
Pallas, 1814
Habitat
Marine
Climate
Subtropical
Max Length
43.1 cm
Lifespan
50 years
Depth Range
6–675 m
Trophic Level
3.7
Resilience
Very low
Vulnerability
48.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 13 - 14; Dorsal soft rays (total): 13 - 16; Anal spines: 3; Anal soft rays: 7 - 9; Vertebrae: 28 - 29. This species is distinguished by the following characters: body light yellow to greenish brown to gray, typically greenish brown, with orange flecks present on sides, distinctly light ventrally above anal-fin base and on ventral pectoral-fin rays; peritoneum light gray to jet black; strong symphyseal knob; extrinsic swimbladder muscle with a single section of striated muscle, lacking anterior fascia, otherwise of type I (a-z) of Hallacher (1974); lateral-line pores 43-54, scales 47-63; pectoral-fin rays 16-19; anal-fin rays 7-9; dorsal-fin rays 13-16; vertebrae total 28-29 (11-12 + 16-18) .

🌀 Behaviour

Behavioural data for Light dusky rockfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

Size at Maturity
36.5cm TL

🌍 Habitat & Distribution

Marine; demersal; depth range 6 - 675 m , usually 100 - 300 m . Subtropical North Pacific: Japan, east coast of Kamchatka to Cape Ol'utorskii in western Bering Sea, along the Aleutian Islands to 60°N in the eastern Bering Sea, through the Gulf of Alaska south to Johnstone Strait, British Columbia and to central Oregon.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.7±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00977 × L3.08 (TL)
Max TL
43.1cm
Dorsal Spines
14
Dorsal Rays
15
Anal Spines
3
Anal Rays
8
Vertebrae
29

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
48.00/100
Moderate-High vulnerability
Trophic Level
3.7
Predator
Climate Zone
Subtropical
Described By
Pallas, 1814

🍽️ Edibility & Flavour

⚡ Nutrition

Detailed nutritional data for Light dusky rockfish is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Light dusky rockfish has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.

🌿 Sustainability

Best Choice
Healthy stocks, low impact
Good Alternative
Well-managed, minor concerns
Use Caution
Check sourcing and season
Avoid
Overfished or high impact

🔬 Full Nutritional Profile

Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)

Proximate Composition
Energy125 kcal
Moisture75 %
Protein20 %
Total Fat4 %
Ash1.3 %
Fatty Acids (g)
Saturated Fat1 g
Monounsaturated Fat1.2 g
Polyunsaturated Fat1.5 g
Omega-3 Total1 g
EPA0.3 g
DHA0.5 g
Omega-6 Total0.3 g
Key Minerals & Vitamins
Calcium20 mg
Iron0.7 mg
Magnesium30 mg
Phosphorus220 mg
Potassium380 mg
Sodium55 mg
Zinc0.5 mg
Selenium32 µg
Vitamin B122 µg

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