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

🌊 Marine Least Concern ⚠️ Venomous ⚡ Traumatogenic 🌡️ Subtropical

California moray

Gymnothorax mordax Ayres, 1859
Max Length
152 cm
Max Weight
-
Lifespan
30 yrs
Trophic Level
4.5
Depth
1–40 m
Climate
Subtropical
Resilience
Low
Vulnerability
77.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Found common among rocks; lives in crevices or holes, usually with only head protruding. Very common in shallow reef areas . Feed mostly at night on crustaceans, octopuses and small fishes. Long-lived. Pelagic spawners .

Scientific Name
Gymnothorax mordax
Authority
Ayres, 1859
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
152 cm
Lifespan
30 years
Depth Range
1–40 m
Latitude
2°S – 34°N
Trophic Level
4.5
Resilience
Low
Vulnerability
77.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Anal spines: 0; Vertebrae: 146 - 154. : eel-like.

🌀 Behaviour

Behavioural data for California moray is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous
Spawn Location
Pelagic

Oviparous. Pelagic spawner .

🌍 Habitat & Distribution

Marine; demersal; depth range 1 - 40 m . Subtropical; 34°N - 2°S, 121°W - 90°W known from the Galapagos Islands (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
4.5±0.8

📐 Morphometrics

Length–Weight Relationship: W = 0.00047 × L3.28 (TL)
Max TL
152cm
Vertebrae
150

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
77.00/100
Very High vulnerability
Trophic Level
4.5
Apex / Top predator
Climate Zone
Subtropical
Latitude Range
34°N – 2°S
Described By
Ayres, 1859

⚠️ Venom Profile

Medical Warning: This species is venomous. Seek immediate medical attention if envenomated. Contact emergency services and follow first aid guidance below.
Venom Type
proteinaceous neurotoxin
Delivery
dorsal, anal, and pelvic fin spines
Potency
Severe
Mortality Risk
Low
Symptom Onset
5min
Duration
24.0hrs
Antivenom
✗ Not Available
Named Toxins
high-molecular-weight protein (Stonustoxin analogue) acetylcholine
Symptoms
  • immediate intense pain
  • swelling
  • erythema
  • occasional nausea and weakness
Affected Body Systems
peripheral nervous system cardiovascular
First Aid
Immerse affected area in hot water (45 C, tolerable) for 30-90 minutes to denature toxin. Do not apply ice.
Medical Treatment

Analgesia; wound care; tetanus prophylaxis; severe cases may require monitoring for systemic effects.

References: Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature

🌐 Names & Taxonomy

Language Common Names
🇬🇧English California moray
🌍CES muréna kalifornská
🇩🇰Danish Californisk muræne
🇫🇷French Murène De Calìfornie
🇮🇹Italian murena californiana
🇵🇱Polish Moringa cetkowana
🇵🇹Portuguese Moréia-da-Califórnia
🇪🇸Spanish morena de California

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 8 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for California moray ↗
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.