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Diadromous Least Concern 🌡️ Temperate

Stenodus Nelma

Stenodus nelma Pallas, 1773
Max Length
150 cm
Max Weight
Lifespan
Trophic Level
3.6
Depth
Climate
Temperate
Resilience
Low
Vulnerability
86.00/100
Typical Length
Depth Zone

📖 Overview

Found in the pelagic zone at the sea with salinity up to 20 ppt. Inhabits large lowland and piedmont rivers and lakes. Prefers cold water with temperatures below 16° C. Forages and overwinters in lower reaches of large rives, deltas, estuaries and sea, sometimes far from coast. Anadromous or semi-anadromous, living in some rivers and landlocked in some lakes. Undertakes migration to spawn in rivers, moving upstream for long distances, up to uppermost reaches in European rivers. Populations in the lake migrate into tributaries. Juveniles prey on mysids, insect larvae and fry, shifting exclusively to piscivory at about 30 cm SL. Actively feeds on all available fishes. Spawning takes place over shallow waters with sand-gravel bottom and 2-3 m depth .

Scientific Name
Stenodus nelma
Authority
Pallas, 1773
Habitat
Diadromous
Climate
Temperate
IUCN Status
LC
Max Length
150 cm
Trophic Level
3.6
Resilience
Low
Vulnerability
86.00/100
Migration
Anadromous
Salinity
30–40 ppt

🐟 Physical Description

Physical description for Stenodus Nelma is currently being compiled.

🌀 Behaviour

Behavioural data for Stenodus Nelma is currently being reviewed.

🦐 Diet

Diet information for Stenodus Nelma is currently being compiled.

🥚 Reproduction

Spawning usually takes place only 1-2 times during life, rarely 3, usually every 2-3 years .

🌍 Habitat & Distribution

Marine; freshwater; brackish; benthopelagic; anadromous. Temperate Arctic Ocean basin, from Ponoi (Kola Peninsula, White Sea basin) eastward to Anadyr (Siberia), Yukon (Alaska) and Mackenzie (Canada) drainages.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish
Migration
Anadromous
Trophic Level
3.6±0.3
Food Items

all available fishes

📐 Morphometrics

Length–Weight Relationship: W = 0.00457 × L3.13 (TL)
Max TL
150cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
86.00/100
Very High vulnerability
Trophic Level
3.6
Predator
Climate Zone
Temperate
Described By
Pallas, 1773

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