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🌊 Marine Data Deficient 🌡️ Tropical

Ridgeback skate

Dipturus amphispinus Last & Alava, 2013
Max Length
89.7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.9
Depth
-
Climate
Tropical
Resilience
Low
Vulnerability
56.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Capture depth unknown, but probably from deep slopes of the Sulu Sea and adjacent waterways. the largest paratype (SUML MMLM 018) was measured in 1999 at 896 mm TL (Compagno et al., 2005) and shrank to 878 mm TL when measured a decade later. Of the two known males, one was sexually mature (621 mm TL) and the slightly larger holotype was at a late adolescent stage (657 mm TL); birth size unknown ..

Scientific Name
Dipturus amphispinus
Authority
Last & Alava, 2013
Habitat
Marine
Climate
Tropical
IUCN Status
DD
Max Length
89.7 cm
Trophic Level
3.9
Resilience
Low
Vulnerability
56.00/100
Salinity
30–40 ppt

🐟 Physical Description

Physical description for Ridgeback skate is currently being compiled.

🌀 Behaviour

Behavioural data for Ridgeback skate 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; pelagic-neritic. Tropical; 12°N - 5°N, 121°E - 129°E Central Pacific: Philippines.

🌿 Ecology

Zone Preferences
🌊 Marine 🐟 Pelagic
Trophic Level
3.9±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00288 × L3.25 (TL)
Max TL
89.7cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
56.00/100
High vulnerability
Trophic Level
3.9
Predator
Climate Zone
Tropical
Described By
Last & Alava, 2013

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