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🌊 Marine Least Concern 🌡️ Deep-water

North Pacific lightfish

Maurolicus japonicus Ishikawa, 1915
Max Length
5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
50–400 m
Climate
Deep-water
Resilience
Medium
Vulnerability
15.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

North Pacific lightfish (Maurolicus japonicus), first described by Ishikawa, 1915 is a small fish in the family Sternoptychidae (order Stomiiformes). Adults typically reach 5.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 50 to 400 metres. It occurs in Deep-water waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Maurolicus japonicus
Authority
Ishikawa, 1915
Habitat
Marine
Climate
Deep-water
IUCN Status
LC
Max Length
5 cm
Depth Range
50–400 m
Trophic Level
3.2
Resilience
Medium
Vulnerability
15.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal soft rays (total): 10 - 11; Anal soft rays: 21 - 24; Vertebrae: 32 - 34.

🌀 Behaviour

Behavioural data for North Pacific lightfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

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

🌍 Habitat & Distribution

Marine; bathypelagic; depth range 50 - 400 m . Deep-water Northwest Pacific: Toyama Bay, Pacific coast of Honshu southward to adjacent waters of Ryukyu Islands and Ogasawara Islands in Japan.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.2±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.00468 × L3.17 (TL)
Max TL
5cm
Dorsal Rays
11
Anal Rays
23
Vertebrae
33

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
15.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Deep-water
Described By
Ishikawa, 1915

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