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🌊 Marine Least Concern 🌡️ Subtropical

Y-bar moray

Gymnothorax ypsilon Hatooka & Randall, 1992
Max Length
89 cm
Max Weight
-
Lifespan
-
Trophic Level
4.1
Depth
110–185 m
Climate
Subtropical
Resilience
Low
Vulnerability
57.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Y-bar moray (Gymnothorax ypsilon), first described by Hatooka & Randall, 1992 is a large fish in the family Muraenidae (order Anguilliformes). Adults typically reach 89.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 110 to 185 metres. It occurs in Subtropical waters. Diet is predominantly piscivorous, targeting other fish and larger prey. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Gymnothorax ypsilon
Authority
Hatooka & Randall, 1992
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
89 cm
Depth Range
110–185 m
Trophic Level
4.1
Resilience
Low
Vulnerability
57.00/100
Salinity
30–40 ppt

🐟 Physical Description

Anal spines: 0; Anal soft rays: 151 - 154; Vertebrae: 141 - 153. A species of Gymnothorax of moderate length. Dorsal fin moderately high, its origin before gill opening. Anus before mid-body. Jaw teeth sharp and uniserial. Body creamy light brown with 26-35 distinct, narrow, dark crossbars extending onto fins (some bars on most specimens Y-shaped). Anterior part of head uniformly light brown. Anal fin with a white margin . MVF 5-56-149 .: eel-like.

🌀 Behaviour

Behavioural data for Y-bar moray is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

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

🌍 Habitat & Distribution

Marine; demersal; depth range 110 - 185 m . Subtropical Pacific Ocean: southern Japan and the Hawaiian Islands.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
4.1±0.7

📐 Morphometrics

Length–Weight Relationship: W = 0.00032 × L3.25 (TL)
Max TL
89cm
Anal Rays
153
Vertebrae
147

🌡️ 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
57.00/100
High vulnerability
Trophic Level
4.1
Apex / Top predator
Climate Zone
Subtropical
Described By
Hatooka & Randall, 1992

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