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🌊 Marine 🌡️ Deep-water

Pearly hairtail

Trichiurus auriga Klunzinger, 1884
Max Length
42.4 cm
Max Weight
-
Lifespan
-
Trophic Level
4.2
Depth
250–350 m
Climate
Deep-water
Resilience
Low
Vulnerability
22.00/100
Typical Length
23 cm
Depth Zone
deep-water

📖 Overview

Found in deep waters off Kerala and Tamil Nadu, India. Feeds on deep water shrimps and small fishes like myctophids and gonostomatids. Caught with deep water trawls mixed together with other commercially important fish as bycatch.

Scientific Name
Trichiurus auriga
Authority
Klunzinger, 1884
Habitat
Marine
Climate
Deep-water
Body Shape
Elongated
Max Length
42.4 cm
Depth Range
250–350 m
Latitude
14°S – 31°N
Trophic Level
4.2
Resilience
Low
Vulnerability
22.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 3; Dorsal soft rays (total): 106 - 116; Anal soft rays: 80. Body extremely elongate, compressed and tapering to a point. Mouth very large with a small dermal process at the tip of each jaw. Pelvic and caudal fins absent. Lateral line originating at the upper margin of the gill cover, running obliquely to behind the tip of the pectoral fins, then parallel to the ventral contour of the body. Fresh specimens are pearl white and slightly dusky dorsally; the margins of the dorsal and anal fins dusky in formalin.: elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Pearly hairtail is currently being reviewed.

🦐 Diet

Diet information for Pearly hairtail is currently being compiled.

🥚 Reproduction

Reproduction data for Pearly hairtail is currently being compiled.

🌍 Habitat & Distribution

Marine; benthopelagic; depth range 250 - 350 m . Deep-water; 31°N - 14°S, 32°E - 139°E west coast of India.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
4.2±0.73
Food Items

deep water shrimps and small fishes like myctophids and gonostomatids

📐 Morphometrics

Length–Weight Relationship: W = 0.00191 × L3.12 (TL)
Max TL
42.4cm
Dorsal Spines
3
Dorsal Rays
111
Anal Rays
80

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
22.00/100
Low vulnerability
Trophic Level
4.2
Apex / Top predator
Body Shape
Elongated
Climate Zone
Deep-water
Latitude Range
31°N – 14°S
Described By
Klunzinger, 1884

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