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🌊 Marine 🌡️ Deep-water

Ragfish

Icosteus aenigmaticus Lockington, 1880
Max Length
213 cm
Max Weight
-
Lifespan
-
Trophic Level
4.5
Depth
0–1420 m
Climate
Deep-water
Resilience
Low
Vulnerability
71.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Adults occur near bottom; juveniles in shallow water or offshore near the surface . Feeds on jellyfish , fishes and squids , as well as octopuses .

Scientific Name
Icosteus aenigmaticus
Authority
Lockington, 1880
Habitat
Marine
Climate
Deep-water
Body Shape
Short and / or deep
Max Length
213 cm
Depth Range
0–1420 m
Trophic Level
4.5
Resilience
Low
Vulnerability
71.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 52 - 55; Anal spines: 0; Anal soft rays: 34 - 40. Pectorals rounded, pedunculate . Generally of a chocolate color . Young more robust, with an expanded and rounded caudal fin, 5 pelvic rays, and a brown and yellow irregularly blotched with faint purple color, dusky on fins .: short and / or deep.

🌀 Behaviour

Behavioural data for Ragfish is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; bathypelagic; depth range 0 - 1420 m , usually 18 - 732 m . Deep-water; 66°N - 32°N North Pacific: Japan to southeastern Alaska and to Point Loma, southern California, USA.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
4.5±0.57
Food Items

jellyfish (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01995 × L3.01 (TL)
Max TL
213cm
Dorsal Rays
54
Anal Rays
37

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
71.00/100
High vulnerability
Trophic Level
4.5
Apex / Top predator
Body Shape
Short and / or deep
Climate Zone
Deep-water
Described By
Lockington, 1880

🌐 Names & Taxonomy

Language Common Names
🇬🇧English ragfish
🌍CES hadrovcovití
🇫🇷French torchon mou
🇯🇵Japanese Irezumikon-nyakuaji · イレズミコンニャクアジ
🇷🇺Russian Рыба-тряпка · тряпичник

Scientific Synonyms

Scientific Name Author Year Status
Acrotus willoughbyi Bean 1888 Synonym
Schedophilopsis spinosus Steindachner 1881 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 6 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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