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🌊 Marine Least Concern 🌡️ Deep-water

White-blotched skate

Bathyraja maculata Ishiyama & Ishihara, 1977
Max Length
134 cm
Max Weight
8.5 kg
Lifespan
-
Trophic Level
4.1
Depth
70–1200 m
Climate
Deep-water
Resilience
Low
Vulnerability
84.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Exhibited migratory pattern of going toward greater depths during colder months for overwintering, while in the warm period, this species predominantly fed at shallower depths Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother . Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats . Egg capsules are 10.19 cm long and 6.28 cm wide .

Scientific Name
Bathyraja maculata
Authority
Ishiyama & Ishihara, 1977
Habitat
Marine
Climate
Deep-water
Body Shape
Other
IUCN Status
LC
Max Length
134 cm
Max Weight
8.5 kg
Depth Range
70–1200 m
Trophic Level
4.1
Resilience
Low
Vulnerability
84.00/100
Water Temp
2–6 °C
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

This species is distinguished from its congeners Bathyraja in having a white blotches of different sizes on the dorsal surface of the disk, lateral folds of tail are broad; clasper has a large pseudosiphon; dense silky fibers covering egg capsule .: other.

🌀 Behaviour

Behavioural data for White-blotched skate is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous
Size at Maturity
97.5cm TL

Oviparous, paired eggs are laid. Embryos feed solely on yolk . Distinct pairing with embrace. Young may tend to follow large objects, such as their mother .

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 70 - 1200 m , usually 400 - 700 m . Deep-water; 2°C - 6°C ; 59°N - 51°N North Pacific: southern Sea of Okhotsk to the eastern Gulf of Alaska, including the Bering Sea, the waters off the Kuril and Aleutian Islands, and eastern Kamchatka.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
4.1±0.71

📐 Morphometrics

Length–Weight Relationship: W = 0.00331 × L3.1 (TL)
Max TL
134cm
Max Weight
8,500g

🌡️ Water Parameters & Tolerance

Temperature Range
2–6°C
Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
84.00/100
Very High vulnerability
Trophic Level
4.1
Apex / Top predator
Body Shape
Other
Climate Zone
Deep-water
Described By
Ishiyama & Ishihara, 1977

🌐 Names & Taxonomy

Language Common Names
🇬🇧English whiteblotched skate
🇳🇱Dutch Witgevlekte rog
🇷🇺Russian Пятнистый скат

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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