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🌊 Marine 🌡️ Subtropical

Gymnura Crooki

Gymnura crooki Fowler, 1934
Max Length
-
Max Weight
-
Lifespan
-
Trophic Level
3.8
Depth
-
Climate
Subtropical
Resilience
Very low
Vulnerability
43.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Gymnura Crooki (Gymnura crooki), first described by Fowler, 1934 is a fish in the family Gymnuridae (order Myliobatiformes). It inhabits marine coastal and open-ocean environments. It occurs in Subtropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator.

Scientific Name
Gymnura crooki
Authority
Fowler, 1934
Habitat
Marine
Climate
Subtropical
Trophic Level
3.8
Resilience
Very low
Vulnerability
43.00/100
Salinity
30–40 ppt

🐟 Physical Description

Physical description for Gymnura Crooki is currently being compiled.

🌀 Behaviour

Behavioural data for Gymnura Crooki 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; demersal. Subtropical Northwest Pacific: known from the type locality, Kowloon, China.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.8±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00851 × L3.08 (TL)

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
43.00/100
Moderate vulnerability
Trophic Level
3.8
Predator
Climate Zone
Subtropical
Described By
Fowler, 1934

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