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🌊 Marine Least Concern 🌡️ Tropical

Spreadfin skate

Dipturus olseni Bigelow & Schroeder, 1951
Max Length
69 cm
Max Weight
Lifespan
Trophic Level
3.8
Depth
55–385 m
Climate
Tropical
Resilience
Low
Vulnerability
46.00/100
Typical Length
Depth Zone
demersal

📖 Overview

Found on outer continental shelf and upper slope . Moderately deep water species . Oviparous . Eggs have horn-like projections on the shell . Males reaches maturity at ca. 51cm TL, females at ca. 59cm TL; hatching size unknown .

Scientific Name
Dipturus olseni
Authority
Bigelow & Schroeder, 1951
Habitat
Marine
Climate
Tropical
Body Shape
Other
IUCN Status
LC
Max Length
69 cm
Depth Range
55–385 m
Trophic Level
3.8
Resilience
Low
Vulnerability
46.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Mucous pores on ventral surface not so black except mouth. Outer rim of nostril fringed. Pair of small white pores behind each spiracle, smaller whitish pores in 2 rows toward the tail . Lack of thorns along the midbelt of the disc from the level of the axils of the pectorals to the vicinity of the spiracles. Interspace between the dorsal fins. Upper surface dark olive brown with many small roundish obscure spots of darker brown on disc. Lower surface jet black .: other.

🌀 Behaviour

Behavioural data for Spreadfin skate is currently being reviewed.

🦐 Diet

Diet information for Spreadfin skate is currently being compiled.

🥚 Reproduction

🐣 Oviparous

Oviparous, paired eggs are laid. Embryos feed solely on yolk . Eggs have horn-like projections on the shell .

🌍 Habitat & Distribution

Marine; demersal; depth range 55 - 385 m . Tropical; 30°N - 20°N, 98°W - 83°W Central Atlantic: northern Gulf of Mexico from Florida to Mexico.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.8±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00288 × L3.25 (TL)
Max TL
69cm

🌡️ 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
46.00/100
Moderate-High vulnerability
Trophic Level
3.8
Predator
Body Shape
Other
Climate Zone
Tropical
Described By
Bigelow & Schroeder, 1951

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) — 3 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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