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🌊 Marine Least Concern 🌡️ Tropical

Blotch-necked moray

Gymnothorax margaritophorus Bleeker, 1864
Max Length
70 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
1–25 m
Climate
Tropical
Resilience
Medium
Vulnerability
48.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Occurs at reef flats and outer reef slopes to a depth of at least 20 m. Feeds on fishes, cephalopodes and crustaceans . Unlikely to be encountered without the use of ichthyocide . Benthic . Possibly a protogynous hermaphrodite . Common, but highly cryptic and seldom seen (Ref 90102). Minimum depth reported taken from Ref. 86942.

Scientific Name
Gymnothorax margaritophorus
Authority
Bleeker, 1864
Habitat
Marine
Climate
Tropical
IUCN Status
LC
Max Length
70 cm
Depth Range
1–25 m
Latitude
24°S – 30°N
Trophic Level
3.6
Resilience
Medium
Vulnerability
48.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Anguilliformes
Anguilliformes
Family
Muraenidae
Muraenidae
Genus
Gymnothorax
Gymnothorax
Species
Blotch-necked moray
Gymnothorax margaritophorus

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0; Vertebrae: 126 - 143. Color yellowish, mottled and irregularly barred with brown shading to whitish ventrally on head and abdomen. Further characterized by body depth at gill opening 18-23 in TL; origin of dorsal fin slightly closer to gill opening than corner of mouth; anus anterior to middle of body; front of upper jaw with three rows of teeth with 3-4 canines on outer row on each side, small teeth in between; two large canines of middle row; side of upper jaw with outer row of small teeth; about four large teeth in inner row; row of small teeth on each side of lower jaw; front of jaw with two pairs of small canines .: eel-like; Cross section: compressed.

🌀 Behaviour

Behavioural data for Blotch-necked moray is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

Protogyny unconfirmed .

🌍 Habitat & Distribution

Marine; reef-associated; depth range 1 - 25 m . Tropical; 30°N - 24°S East Africa to the Line and Society islands, north to the Ryukyu Islands, south to the southern Great Barrier Reef.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.6±0.7
Food Items

fishes, cephalopodes and crustaceans (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00045 × L3.24 (TL)
Max TL
70cm
Vertebrae
135

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
48.00/100
Moderate-High vulnerability
Trophic Level
3.6
Predator
Climate Zone
Tropical
Latitude Range
30°N – 24°S
Described By
Bleeker, 1864

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Gymnothorax talofa Jordan & Starks 1906 Synonym
Lycodontis margaritophorus Bleeker 1864 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 14 records indexed .

Occurrence density from GBIF View GBIF records ↗

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