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🌊 Marine Critically Endangered 🌡️ Tropical

Smalltooth stingray

Hypanus rudis Günther, 1870
Max Length
320 cm
Max Weight
-
Lifespan
-
Trophic Level
3.7
Depth
-
Climate
Tropical
Resilience
Low
Vulnerability
77.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Smalltooth stingray (Hypanus rudis), first described by Günther, 1870 is a giant fish in the family Dasyatidae (order Myliobatiformes). Adults typically reach 320.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Critically Endangered.

Scientific Name
Hypanus rudis
Authority
Günther, 1870
Habitat
Marine
Climate
Tropical
Body Shape
Other
IUCN Status
CR
Max Length
320 cm
Trophic Level
3.7
Resilience
Low
Vulnerability
77.00/100
Salinity
30–40 ppt

🐟 Physical Description

Diagnosis: A large stingray entirely covered by discrete prickles, but without tubercles .: other.

🌀 Behaviour

Behavioural data for Smalltooth stingray 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 . Distinct pairing with embrace .

🌍 Habitat & Distribution

Marine; brackish; demersal. Tropical Atlantic Ocean: Nigeria (Old Calabar), Benin, Gulf of Guinea (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish ⬇️ Benthic
Trophic Level
3.7±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00447 × L3.12 (TL)
Max TL
320cm

🌡️ 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
77.00/100
Very High vulnerability
Trophic Level
3.7
Predator
Body Shape
Other
Climate Zone
Tropical
Described By
Günther, 1870

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