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

🌊 Marine Vulnerable 🌡️ Deep-water

Great seahorse

Hippocampus kelloggi Jordan & Snyder, 1901
Max Length
-
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
1–150 m
Climate
Deep-water
Resilience
Medium
Vulnerability
12.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Deep water species, associated with corals . Ovoviviparous . The male carries the eggs in a brood pouch which is found under the tail .

Scientific Name
Hippocampus kelloggi
Authority
Jordan & Snyder, 1901
Habitat
Marine
Climate
Deep-water
Body Shape
Other
IUCN Status
VU
Depth Range
1–150 m
Trophic Level
3.4
Resilience
Medium
Vulnerability
12.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 17 - 19. : other.

🌀 Behaviour

Behavioural data for Great seahorse is currently being reviewed.

🦐 Diet

Diet information for Great seahorse is currently being compiled.

🥚 Reproduction

Size at Maturity
15cm TL

Male carries the eggs in a brood pouch .

🌍 Habitat & Distribution

Marine; bathydemersal; non-migratory; depth range 1 - 150 m . Deep-water West Pacific: Tanzania up to the Red Sea and New Caledonia; north to Japan, south to Australia.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Migration
Non-migratory
Trophic Level
3.4±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00447 × L3 (TL)
Dorsal Rays
18

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
12.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Other
Climate Zone
Deep-water
Described By
Jordan & Snyder, 1901

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Great seahorse ↗
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Spotted incorrect or outdated data?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.