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🌊 Marine 🌡️ Deep-water

Japanese pugnose grenadier

Nezumia condylura Jordan & Gilbert, 1904
Max Length
21 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
200–720 m
Climate
Deep-water
Resilience
Medium
Vulnerability
36.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Uncommon in depths shallower than 400 m. Frequents waters of 5-7°C. Polychaetes and euphausiids compose 30-60% of the diet of specimens from Japan, and prawns of minor importance.

Scientific Name
Nezumia condylura
Authority
Jordan & Gilbert, 1904
Habitat
Marine
Climate
Deep-water
Body Shape
Elongated
Max Length
21 cm
Depth Range
200–720 m
Trophic Level
3.3
Resilience
Medium
Vulnerability
36.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 2; Anal spines: 0. Snout short, blunt; terminal and lateral scutes large, blunt; undersides of snout, mandible, most of the suborbital, and part of the lower margin of the preopercle naked. Body scales with sharp, slender spinules in 4 to 16 parallel rows. Pyloric caeca 25 to 28. Overall color is brown; abdomen bluish; gill membranes blackish; fins dusky, first dorsal fin blackish distally; oral and branchial linings blackish.: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Japanese pugnose grenadier 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; bathydemersal; non-migratory; depth range 200 - 720 m . Deep-water; 37°N - 23°N, 124°E - 140°E Northwest Pacific: southern Japan and the East China Sea.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Migration
Non-migratory
Trophic Level
3.3±0.43

📐 Morphometrics

Length–Weight Relationship: W = 0.00219 × L3.2 (TL)
Max TL
21cm
Dorsal Spines
2

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
36.00/100
Moderate vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Deep-water
Described By
Jordan & Gilbert, 1904

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