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🌊 Marine Least Concern 🍽️ Edible ⚠️ Venomous ⚡ Venomous 🌡️ Tropical

Barred soapfish

Diploprion bifasciatus Cuvier, 1828
Max Length
25 cm
Max Weight
-
Lifespan
-
Trophic Level
4
Depth
1–100 m
Climate
Tropical
Resilience
-
Vulnerability
13.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Found mainly in coastal habitats in semi-silty conditions ; also found near caves and crevices in rocky and coral reefs from a few meters to at least 100 m. A predator that feeds on surprisingly large prey, swallowed whole through its expandable jaws . Feeds mainly on fishes. Secretes the skin toxin grammistin under stress .

Scientific Name
Diploprion bifasciatus
Authority
Cuvier, 1828
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
25 cm
Depth Range
1–100 m
Latitude
32°S – 35°N
Trophic Level
4
Vulnerability
13.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Diploprion
Diploprion
Species
Barred soapfish
Diploprion bifasciatus

🐟 Physical Description

Dorsal spines (total): 8; Dorsal soft rays (total): 13 - 16; Anal spines: 2; Anal soft rays: 12 - 13. Body compressed, its width 3.3-4 in depth . Normally yellow, but sometimes nearly all black and juveniles take-on colors of the local venomous Meiacanthus blennies that are yellow or grey . : short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Barred soapfish is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; reef-associated; depth range 1 - 100 m, usually 5 - 50 m . Tropical; 35°N - 32°S, 72°E - 171°E West Pacific: Maldives and India to Papua New Guinea, north to southern Japan, south to Lord Howe Island (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
4±0.65
Food Items

surprisingly large prey, swallowed whole through its expandable jaws (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01778 × L3.04 (TL)
Max TL
25cm
Dorsal Spines
8
Dorsal Rays
15
Anal Spines
2
Anal Rays
13

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2015

📊 Population Risk & Fisheries

Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
4
Apex / Top predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Latitude Range
35°N – 32°S
Described By
Cuvier, 1828

⚠️ 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
Potency
Severe
Mortality Risk
Low
Symptom Onset
5min
Duration
24.0hrs
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

"Diploprion Bifasciatus 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

Per 100g cooked - Source: USDA FoodData Central

Nutrient Amount
Protein 18.1 g
Omega-3 (total) 138 mg

🔬 Mercury Safety

Mercury data for Barred soapfish 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

📊 Population Dynamics

Year Region Index Notes
- - -

👥 Community & Contribute

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