📖 Overview
Found near shore, down to 260 m, on sand and sandy mud bottoms . Spend a large part of their time buried in the mud or sand with only their eyes and a portion of the mouth protruding . Cleithral spine with venom gland .
Scientific Name
Uranoscopus japonicus
🐟 Physical Description
Dorsal spines (total): 4 - 6; Dorsal soft rays (total): 13 - 15; Anal soft rays: 13 - 15; Vertebrae: 26. Lower edge of preopercle with 3 spines, very rarely to be more. Labial fimbriae simple and poorly developed. Posterior nostril slitlike. Dorsoposterior margin of pectoral fin slightly concave; pectoral and caudal fins pale yellow in fresh specimens. Fifth proximal anal pterygiophore (the first to follow a complete haemal spine) usually inserts between the haemal spines of 13th and 14th vertebrae .: elongated.
🌀 Behaviour
Behavioural data for aquarium is currently being
reviewed.
🦐 Diet
aquatic invertebrates
small fish
algae
detritus
🥚 Reproduction
🐣 Oviparous
📦 Batch Spawner
Spawning Season
spring-summer
🌍 Habitat & Distribution
Marine; bathydemersal; depth range 250 - 300 m . Deep-water South China Sea except Ryukyu Islands.
🌿 Ecology
Zone Preferences
🌊 Marine
🌑 Deep Water
📐 Morphometrics
Length–Weight Relationship:
W = 0.00794 × L3.09
(TL)
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
IUCN Category
Least Concern
📊 Population Risk & Fisheries
Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
24.00/100
Low vulnerability
Trophic Level
3.9
Predator
Described By
Houttuyn, 1782
⚠️ 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 neurotoxin
Delivery
dorsal, anal, and pelvic fin spines
Antivenom
✗ Not Available
Named Toxins
high-molecular-weight protein (Stonustoxin analogue)
acetylcholine
Symptoms
- immediate intense pain
- swelling
- erythema
- occasional nausea and weakness
Affected Body Systems
peripheral nervous system
cardiovascular
First Aid
Immerse affected area in hot water (45 C, tolerable) for 30-90 minutes to denature toxin. Do not apply ice.
Medical Treatment
Analgesia; wound care; tetanus prophylaxis; severe cases may require monitoring for systemic effects.
References:
Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature
🍽️ Edibility & Flavour
"aquarium 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 aquarium is
currently being compiled from USDA FoodData Central.
🔬 Mercury Safety
Mercury data for aquarium 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
✓ Sustainable Choice
🔬 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 |
| - |
- |
- |
|
🌐 Names & Taxonomy
|
Language |
Common Names |
|
🇬🇧English
|
Japanese Stargazer
|
|
🇯🇵Japanese
|
Mishimaokoze · ミシマオコゼ
|
|
🇰🇷Korean
|
얼룩통구멍
|
|
🇷🇺Russian
|
Японский звездочёт
|
|
🇨🇳Chinese
|
向天虎 · 含笑 · 大頭丁 · 日本瞻星魚 · 日本鰧 · 眼鏡魚
|
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 16 records indexed
.