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🌊 Marine Critically Endangered 🌡️ Tropical

Spineback guitarfish

Rhinobatos irvinei Norman, 1931
Max Length
100 cm
Max Weight
-
Lifespan
-
Trophic Level
3.8
Depth
-
Climate
Tropical
Resilience
Low
Vulnerability
46.00/100
Typical Length
65 cm
Depth Zone
demersal

📖 Overview

More or less stationary in inshore coastal waters to moderate depth. Feeds on benthic invertebrates, mainly crustaceans. Common length is 60-66 cm TL. Males mature at ca. 42 cm TL . Ovoviviparous. Produces small litters of 1-3 pups .

Scientific Name
Rhinobatos irvinei
Authority
Norman, 1931
Habitat
Marine
Climate
Tropical
IUCN Status
CR
Max Length
100 cm
Latitude
17°S – 29°N
Trophic Level
3.8
Resilience
Low
Vulnerability
46.00/100
Salinity
30–40 ppt

🐟 Physical Description

Physical description for Spineback guitarfish is currently being compiled.

🌀 Behaviour

Behavioural data for Spineback guitarfish is currently being reviewed.

🦐 Diet

Diet information for Spineback guitarfish is currently being compiled.

🥚 Reproduction

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures .

🌍 Habitat & Distribution

Marine; demersal; depth range ? - 30 m . Tropical; 29°N - 17°S, 19°W - 13°E

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.8±0.4
Food Items

benthic invertebrates, mainly crustaceans

📐 Morphometrics

Length–Weight Relationship: W = 0.00302 × L3.13 (TL)
Max TL
100cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
46.00/100
Moderate-High vulnerability
Trophic Level
3.8
Predator
Climate Zone
Tropical
Latitude Range
29°N – 17°S
Described By
Norman, 1931

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Rhinobatus irvinei Norman 1931 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 665 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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