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🌊 Marine 🌡️ Temperate

Fourhorn poacher

Hypsagonus quadricornis Valenciennes, 1829
Max Length
12 cm
Max Weight
-
Lifespan
7 yrs
Trophic Level
3.2
Depth
0–452 m
Climate
Temperate
Resilience
High
Vulnerability
24.00/100
Typical Length
10 cm
Depth Zone
demersal

📖 Overview

Rocky sand, gravel, or pebble bottoms. Frequently covered by featherlike polyps (small hydroid animals) .

Scientific Name
Hypsagonus quadricornis
Authority
Valenciennes, 1829
Habitat
Marine
Climate
Temperate
Body Shape
Elongated
Max Length
12 cm
Lifespan
7 years
Depth Range
0–452 m
Trophic Level
3.2
Resilience
High
Vulnerability
24.00/100
Migration
Non-migratory
Water Temp
1–9 °C
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 8 - 11; Dorsal soft rays (total): 5 - 7; Anal spines: 0; Anal soft rays: 8 - 11; Vertebrae: 35 - 37. Lower lobe of pectoral fin with 7 to 8 free rays. A barbel is present on the tip of the snout. Dorsum highly elevated at nape. Branchial membrane free from isthmus. Supralateral and infralateral plates attached to each other on lateral line. Dorsal fins close to each other. Lateral line plates less than 15. : elongated.

🌀 Behaviour

Behavioural data for Fourhorn poacher 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; demersal; non-migratory; depth range 0 - 452 m , usually 100 - 150 m . Temperate; 1°C - 9°C ; 62°N - 46°N, 171°E - 121°W North Pacific: Sea of Okhotsk, Sea of Japan (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Migration
Non-migratory
Trophic Level
3.2±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00479 × L3.05 (TL)
Max TL
12cm
Dorsal Spines
10
Dorsal Rays
6
Anal Rays
10
Vertebrae
36

🌡️ Water Parameters & Tolerance

Temperature Range
1–9°C
Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
24.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Elongated
Climate Zone
Temperate
Described By
Valenciennes, 1829

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 4 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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