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🌊 Marine Critically Endangered 🌡️ Subtropical

Smoothnose wedgefish

Rhynchobatus laevis Bloch & Schneider, 1801
Max Length
270 cm
Max Weight
240.0 kg
Lifespan
-
Trophic Level
3.6
Depth
0–60 m
Climate
Subtropical
Resilience
Low
Vulnerability
80.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

A benthic species mainly found near the coast in shallow bays and off river mouths. It is poorly known but probably feeds on bottom-dwelling crustaceans and fishes . Ovoviviparous .

Scientific Name
Rhynchobatus laevis
Authority
Bloch & Schneider, 1801
Habitat
Marine
Climate
Subtropical
Body Shape
Elongated
IUCN Status
CR
Max Length
270 cm
Max Weight
240 kg
Depth Range
0–60 m
Trophic Level
3.6
Resilience
Low
Vulnerability
80.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

: elongated; Cross section: flattened.

🌀 Behaviour

Behavioural data for Smoothnose wedgefish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

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 0 - 60 m . Subtropical; 35°N - 4°N, 49°E - 142°E West Pacific: Oman to Japan; mainly in the Indian Ocean.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.6±0.6
Food Items

bottom-dwelling crustaceans and fishes (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00363 × L3.11 (TL)
Max TL
270cm
Max Weight
240,000g

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
80.00/100
Very High vulnerability
Trophic Level
3.6
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Bloch & Schneider, 1801

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Giant Guitarfish · Sandshark · Shovelnose Shark · Smoothnose Wedgefish
🇸🇦Arabic سماك القيثارةالعملاق · سمك الاسفين سلس الأنف · سمكة الوتد ذات الأنف الأملس · قرش مجرفي الانف
🌍CES kytarovec zpozdilý
🇩🇪German Glattnasen-Geigenrochen · Glattnasen-Gitarrenrochen
🇮🇹Italian Pesce chitarra liscio · Pesce violino liscio
🇳🇱Dutch Gladneuskegrog
🇵🇹Portuguese Raia-viola-gigante-de-focinho-liso
🌍THA ปลาโรนันจมูกเรียบ

Scientific Synonyms

Scientific Name Author Year Status
Rhinobatus laevis Bloch & Schneider 1801 Synonym
Rhynchobatus yentinensis Wang 1933 Heterotypic

🗺️ 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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