📖 Overview
Found in coral reefs and estuarine areas, on sand and mud bottoms . Feeds on small fishes and crustaceans . Ovoviviparous with litters of only 1 pup while earlier estimates indicated production of up to 10 in a litter . Caught occasionally by bottom trawl fisheries operating inshore. Utilized for its meat but of limited value due to its small size. Served in 'miso' soup, hard boiled with seasonings, or for 'kamaboko' material .
Scientific Name
Hemitrygon akajei
Authority
Müller & Henle, 1841
🐟 Physical Description
Disc rhomboid, anterior margin straight, posterior margin convex. Snout triangular and slightly produced. dorsal keel present on tail. Adults with small spines on disc and posterior part of tail. Brown dorsally and some with orangish pectoral fin margins, in front of eyes, behind spiracles, on the sides of the tail just anterior to the sting. Ventrum orangish red.: other.
🌀 Behaviour
Behavioural data for Whip stingray is currently being
reviewed.
🦐 Diet
aquatic invertebrates
small fish
algae
detritus
🥚 Reproduction
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; oceanodromous ; depth range 10 - 50 m . Subtropical; 43°N - 23°N Northwest Pacific: central China to northern Japan.
🌿 Ecology
Zone Preferences
🌊 Marine
🌿 Brackish
⬇️ Benthic
Food Items
small fishes and crustaceans (Ref
📐 Morphometrics
Length–Weight Relationship:
W = 0.00447 × L3.12
(TL)
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
IUCN Category
Near Threatened
📊 Population Risk & Fisheries
Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
74.00/100
High vulnerability
Trophic Level
3.8
Predator
Described By
Müller & Henle, 1841
⚠️ Venom Profile
Medical Warning: This species is venomous. Seek immediate medical attention
if envenomated.
Contact emergency services and follow first aid guidance below.
Venom Type
proteinaceous cytotoxic
Delivery
serrated caudal spine (barb)
Antivenom
✗ Not Available
Named Toxins
phosphodiesterase
5-nucleotidase
cardiotoxin peptides
Symptoms
- intense pain
- laceration
- oedema
- retained spine fragments possible
Affected Body Systems
cardiovascular
muscular
First Aid
Hot water immersion. Do not remove embedded barb from chest or abdomen - medical removal only.
Medical Treatment
Wound care, imaging for retained spine, tetanus prophylaxis, antibiotic prophylaxis for marine wounds.
References:
Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature
🎣 Angling Guide
Fight Rating
strong pulls with head-shakes
Best Seasons
spring,summer,fall
Best Time
incoming tide, dawn and dusk
Rod Type
medium-heavy spinning
Catch & Release
✓ Recommended
Best Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Techniques
bottom fishing
popping cork
soft plastics
live bait
Bait & Lures
live shrimp
cut mullet
soft plastic paddle-tails
popping corks
Recommended Tackle
-
medium-heavy 7ft spinning rod
-
30-50 lb braid
-
fluorocarbon leader
Where to Find Them
-
grass flats
-
oyster bars
-
marsh drains
-
deeper channel edges
Tips & Tricks
Popping cork technique attracts fish from distance. Fish moving tides.
Catch & Release Tips
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
Regulations Summary
⚠️
Slot limits protect breeding-size fish. Verify daily bag limits.
🍽️ Edibility & Flavour
"Whip stingray is an edible species."
✗ Not for Raw
✓ Fresh Indicators
- Clear, bright eyes — cloudy eyes indicate age
- Firm flesh that springs back when pressed
- Fresh ocean smell, never strong or ammonia-like
- Bright red or pink gills, not grey or brown
- Shiny, moist skin with scales tightly attached
✗ Avoid If
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
Best Cooking Methods
Baking
Grilling
Pan-frying
⚡ Nutrition
Detailed nutritional data for Whip stingray is
currently being compiled from USDA FoodData Central.
🔬 Mercury Safety
Mercury data for Whip stingray has not yet been
assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
Best Choice
Healthy stocks, low impact
Good Alternative
Well-managed, minor concerns
Use Caution
Check sourcing and season
Avoid
Overfished or high impact
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g
- Source: USDA FoodData Central templates (generic fish average)
Proximate Composition
Energy125 kcal
Moisture75 %
Protein20 %
Total Fat4 %
Ash1.3 %
Fatty Acids (g)
Saturated Fat1 g
Monounsaturated Fat1.2 g
Polyunsaturated Fat1.5 g
Omega-3 Total1 g
EPA0.3 g
DHA0.5 g
Omega-6 Total0.3 g
Key Minerals & Vitamins
Calcium20 mg
Iron0.7 mg
Magnesium30 mg
Phosphorus220 mg
Potassium380 mg
Sodium55 mg
Zinc0.5 mg
Selenium32 µg
Vitamin B122 µg
📊 Population Dynamics
| Year |
Region |
Index |
Notes |
| - |
- |
- |
|
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 21 records indexed
.