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🌊 Marine Least Concern 🌡️ Subtropical

Joined-fins skate

Bathyraja cousseauae Díaz de Astarloa & Mabragaña, 2004
Max Length
86 cm
Max Weight
-
Lifespan
-
Trophic Level
4
Depth
119–284 m
Climate
Subtropical
Resilience
Low
Vulnerability
61.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Joined-fins skate (Bathyraja cousseauae) is a ray-finned fish of the family Arhynchobatidae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 86 cm. It occurs at depths between 119 and 284 metres. With a trophic level of 4, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Bathyraja cousseauae
Authority
Díaz de Astarloa & Mabragaña, 2004
Habitat
Marine
Climate
Subtropical
Body Shape
Other
IUCN Status
LC
Max Length
86 cm
Depth Range
119–284 m
Trophic Level
4
Resilience
Low
Vulnerability
61.00/100
Salinity
30–40 ppt

🐟 Physical Description

This species is distinguished by having the following characters: a large and very distinct round pale area ocellus-like, margined with dark brown on posterior part of each pectoral base of the upper side of the disc; upper surface of disc fully covered with numerous small spinules, also on interorbital area, tail, dorsal fins, and posterior pelvic lobes; larger individuals with scattered spinules distributed in central parts of the disc; ocular thorns absent; continuous row of 21-27 median thorns from nuchal; region to first dorsal fin; males have elongated, slender rod-shaped claspers; dorsal fin densely spinulose close to the end of tail and with no space between them .: other.

🌀 Behaviour

Behavioural data for Joined-fins skate is currently being reviewed.

🦐 Diet

Diet information for Joined-fins skate is currently being compiled.

🥚 Reproduction

Reproduction data for Joined-fins skate is currently being compiled.

🌍 Habitat & Distribution

Marine; demersal; depth range 119 - 284 m . Subtropical Southeast Pacific: Chile.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
4±0.7

📐 Morphometrics

Length–Weight Relationship: W = 0.00562 × L3.13 (TL)
Max TL
86cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
61.00/100
High vulnerability
Trophic Level
4
Apex / Top predator
Body Shape
Other
Climate Zone
Subtropical
Described By
Díaz de Astarloa & Mabragaña, 2004

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