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🌊 Marine Least Concern 🌡️ Subtropical

Thornback guitarfish

Platyrhinoidis triseriata Jordan & Gilbert, 1880
Max Length
91 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
0–137 m
Climate
Subtropical
Resilience
Very low
Vulnerability
48.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Inhabits fine sand to mud bottom, often near kelp beds and sometimes abundant on mud flats of coastal bays. Often buries itself in bottom sediments. Ranges from the intertidal zone to 50 m depth . Solitary or in small groups, gathers in shallow bays, lagoons, and off beaches. Feeds on small sand-dwelling crustaceans, worms and mollusks. Ovoviviparous , with 1 to 15 pups in a litter , mainly in August . Possesses ampullary electroreceptors with a region of maximum sensitivity of 5-15 Hz .

Scientific Name
Platyrhinoidis triseriata
Authority
Jordan & Gilbert, 1880
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
91 cm
Depth Range
0–137 m
Trophic Level
3.4
Resilience
Very low
Vulnerability
48.00/100
Salinity
30–40 ppt

🐟 Physical Description

Physical description for Thornback guitarfish is currently being compiled.

🌀 Behaviour

Behavioural data for Thornback guitarfish 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 - 137 m . Subtropical; 38°N - 23°N, 124°W - 108°W

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.4±0.42
🧍 Solitary
Food Items

small sand-dwelling crustaceans, worms and mollusks

📐 Morphometrics

Length–Weight Relationship: W = 0.01 × L3.04 (TL)
Max TL
91cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2015

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
48.00/100
Moderate-High vulnerability
Trophic Level
3.4
Predator
Climate Zone
Subtropical
Described By
Jordan & Gilbert, 1880

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Platyrhina triseriata Jordan & Gilbert 1880 Synonym
Platyrhinoides triseriata Jordan & Gilbert 1880 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 6 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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