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Diadromous Least Concern 🌡️ Polar

Bering cisco

Coregonus laurettae Bean, 1881
Max Length
36 cm
Max Weight
-
Lifespan
-
Trophic Level
3.8
Depth
-
Climate
Polar
Resilience
Medium
Vulnerability
53.00/100
Typical Length
30 cm
Depth Zone
pelagic

📖 Overview

Found near river mouths and brackish lagoons . Adults make extensive migrations related to spawning . They feed on invertebrates and cottids . Apparently does not feed during its spawning runs . Some populations anadromous .

Scientific Name
Coregonus laurettae
Authority
Bean, 1881
Habitat
Diadromous
Climate
Polar
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
36 cm
Trophic Level
3.8
Resilience
Medium
Vulnerability
53.00/100
Migration
Anadromous
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 11 - 13; Anal spines: 0; Anal soft rays: 12 - 14; Vertebrae: 62 - 65. Distinguished by the pale, almost colorless pelvic and pectoral fins and the smaller number of gill rakers on the lower portion of the first gill arch . Dorsal rather high and falcate; pelvic fins with axillary process . Generally brownish to dark green on back; silvery on lower sides and belly; anal, pelvic and pectoral fins pale; caudal and dorsal fins dusky .: fusiform / normal.

🌀 Behaviour

Behavioural data for Bering cisco is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner 🪺 Nest Builder 🛡️ Egg Guarder
Spawning Season
spring
Spawn Location
Nest
Fertilization
External

🌍 Habitat & Distribution

Marine; freshwater; brackish; pelagic-neritic; anadromous . Polar; 69°N - 58°N North America: Alaska.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish 🐟 Pelagic
Migration
Anadromous
Trophic Level
3.8±0.59
Food Items

invertebrates and cottids (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00525 × L3.17 (TL)
Max TL
36cm
Max FL
30cm
Dorsal Rays
12
Anal Rays
13
Vertebrae
64

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
53.00/100
Moderate-High vulnerability
Trophic Level
3.8
Predator
Body Shape
Fusiform / normal
Climate Zone
Polar
Described By
Bean, 1881

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