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💧 Freshwater Least Concern 🌡️ Boreal

Big Baikal oilfish

Comephorus baikalensis Pallas, 1776
Max Length
21 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
0–1600 m
Climate
Boreal
Resilience
Low
Vulnerability
28.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Adults prefer deep waters but females and occasionally males may be found on the surface. Depth of distribution in January and February is 150-250 m; 100-120 m in March and April. Adults feed mainly on the amphipod Macrohectopus branickii. Mature individuals spawn in July to October. Fat content of the body is about 25%. The dead fish does not sink but float up to the surface and freeze into ice. In spring, they are cast ashore by the waves .

Scientific Name
Comephorus baikalensis
Authority
Pallas, 1776
Habitat
Freshwater
Climate
Boreal
Body Shape
Elongated
IUCN Status
LC
Max Length
21 cm
Depth Range
0–1600 m
Trophic Level
3.3
Resilience
Low
Vulnerability
28.00/100
Migration
Potamodromous
Water Temp
4–18 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 30 - 34; Anal spines: 0; Anal soft rays: 30 - 36. No swim bladder ,: elongated.

🌀 Behaviour

Behavioural data for Big Baikal oilfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; pelagic; potamodromous ; depth range 0 - 1600 m . Boreal; 4°C - 18°C

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Migration
Potamodromous
Trophic Level
3.3±0.53
Food Items

the amphipod Macrohectopus branickii

📐 Morphometrics

Length–Weight Relationship: W = 0.00562 × L3.14 (TL)
Max TL
21cm
Dorsal Spines
7
Dorsal Rays
32
Anal Rays
33

🌡️ Water Parameters & Tolerance

Temperature Range
4–18°C
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
28.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Boreal
Described By
Pallas, 1776

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Callionymus baikalensis Pallas 1776 Synonym
Comephorus baicalensis Pallas 1776 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 2 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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