New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

🌊 Marine Least Concern 🌡️ Tropical

Johnius Grypotus

Johnius grypotus Richardson, 1846
Max Length
20.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
25–110 m
Climate
Tropical
Resilience
High
Vulnerability
19.00/100
Typical Length
-
Depth Zone
-

📖 Overview

The most common species of Johnius (Johnius) in Chinese waters . Sandy-muddy bottoms and muddy bottoms from 25-110 m depth .

Scientific Name
Johnius grypotus
Authority
Richardson, 1846
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
20.8 cm
Depth Range
25–110 m
Trophic Level
3.4
Resilience
High
Vulnerability
19.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 10 - 12; Dorsal soft rays (total): 24 - 48; Anal spines: 2; Anal soft rays: 7 - 9; Vertebrae: 24 - 26. Snout blunt. Interorbital space wide (8.0-9.7% SL). Anal soft rays usually eight. High gill raker count (6-7 + 1 + 10-14). Scales on throat ctenoid.: fusiform / normal.

🌀 Behaviour

Behavioural data for Johnius Grypotus is currently being reviewed.

🦐 Diet

Diet information for Johnius Grypotus is currently being compiled.

🥚 Reproduction

Reproduction data for Johnius Grypotus is currently being compiled.

🌍 Habitat & Distribution

Marine; benthopelagic; depth range 25 - 110 m . Tropical Northwest Pacific: along the coasts of China and Taiwan, from the Gulf of Pohai to Hainan.

🌿 Ecology

Zone Preferences
🌊 Marine
Trophic Level
3.4±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00813 × L3.06 (TL)
Max TL
20.8cm
Dorsal Spines
11
Dorsal Rays
36
Anal Spines
2
Anal Rays
8
Vertebrae
25

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
19.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Richardson, 1846

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Johnius Grypotus ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.