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🌊 Marine Vulnerable 🌡️ Subtropical

Banded guitarfish

Zapteryx exasperata Jordan & Gilbert, 1880
Max Length
-
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
1–200 m
Climate
Subtropical
Resilience
Very low
Vulnerability
63.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Generally in rocky areas mainly shallower than 10 m, moves offshore onto soft bottoms in autumn and winter; but may also be found on sandy bottoms. Reported from tide pools . Relatively docile, harmless rays that are easily approached by divers . Feeds mainly on mollusks and crustaceans . Ovoviviparous , with 4 to 11 pups in a litter . Maturity size of males at 64-70 cm TL, females at 57-77 cm TL; birth size at 15-18 cm TL . Seldom buries itself in sand. This species is a commercially important part of artisanal fisheries . Etymology: The genus name comes from the Greek za, meaning intensive, and pteryx, meaning fin, in reference to the vertical fins being larger than those of skates. The species name comes from Latin, meaning made rough, in reference to the numerous stellate prickles on its back. .

Scientific Name
Zapteryx exasperata
Authority
Jordan & Gilbert, 1880
Habitat
Marine
Climate
Subtropical
Body Shape
Other
IUCN Status
VU
Depth Range
1–200 m
Trophic Level
3.6
Resilience
Very low
Vulnerability
63.00/100
Salinity
30–40 ppt

🐟 Physical Description

Vertebrae: 149 - 150. Spiral valve count: 8-10. Broad disc is about as wide as it is long; dorsal surface covered with numerous, small to large, scattered, stellate prickles; a single median row of enlarged thorns running along the mid-back; a broad, short snout; small, blunt, pebble like teeth; a dorsal fin that originates closer to the pelvic fin bases than to the caudal fin origin; a thick tail and a moderately large, rounded caudal fin without a distinct lower lobe. Tooth count: 60-75/60-75. Coloration: The dorsal surface is sandy brown to dark gray, with several prominent black bars, and lighter below with dark spots on the posterior edge of the pectoral fins.: other.

🌀 Behaviour

Behavioural data for Banded guitarfish is currently being reviewed.

🦐 Diet

Diet information for Banded guitarfish is currently being compiled.

🥚 Reproduction

Size at Maturity
68cm TL

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 . During breeding season, male and female adult schools congregate in shallow areas of bays and lagoons . Parturition takes place three to four months after mating, with litters of 4 to 11 pups .

🌍 Habitat & Distribution

Marine; reef-associated; depth range 1 - 200 m , usually 1 - 22 m . Subtropical; 37°N - 20°N, 125°W - 108°W

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.6±0.53
Food Items

mollusks and crustaceans (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00724 × L3 (TL)
Vertebrae
150

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2025

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
63.00/100
High vulnerability
Trophic Level
3.6
Predator
Body Shape
Other
Climate Zone
Subtropical
Described By
Jordan & Gilbert, 1880

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Platyrhina exasperata Jordan & Gilbert 1880 Synonym
Trigonorhina alveata Garman 1880 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 25 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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