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🌊 Marine Least Concern 🍽️ Edible ⚠️ Venomous 🐠 Aquarium ⚡ Traumatogenic 🌡️ Tropical

Orange-lined triggerfish

Balistapus undulatus Park, 1797
Balistapus Undulatus (Balistapus undulatus)
Balistapus Undulatus (Balistapus undulatus)
Max Length
30 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
0–60 m
Climate
Tropical
Resilience
Medium
Vulnerability
31.00/100
Typical Length
26 cm
Depth Zone
reef

📖 Overview

Adults which are territorial in nature occur in coral-rich areas of deep lagoon and seaward reefs from the lower surge zone to at least 50 meters . They feed on a variety of benthic organisms such as algae, echinoderms, fishes, mollusks, tunicates, sponges, and hydrozoans. Eggs are laid as one cluster in a shallow excavation on sand or rubble along channels. . Marketed fresh and dried-salted .

Scientific Name
Balistapus undulatus
Authority
Park, 1797
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
30 cm
Depth Range
0–60 m
Latitude
32°S – 32°N
Trophic Level
3.4
Resilience
Medium
Vulnerability
31.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 3; Dorsal soft rays (total): 24 - 27; Anal spines: 0; Anal soft rays: 20 - 24. This species is distinguished by the following characters: front of eye without the elongate groove; enlarged scales above the pectoral-fin base and just behind the gill opening to form a flexible tympanum; the scales of the caudal peduncle with 2 longitudinal rows of large anterior-projecting spines; the slightly rounded caudal fin with compressed peduncle; head and body colour green to brown with diagonally curved orange lines and a large round black blotch covering most of the caudal-fin base; rays of soft dorsal, anal and pectoral fins orange and also the caudal fin .: short and / or deep; Cross section: oval.

🌀 Behaviour

Behavioural data for Orange-lined triggerfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

Size at Maturity
15.7cm TL

Spawning behaviour may involve loose aggregations and nesting occurs in channels. The eggs are laid in a single spongy cluster in a shallow excavation in rubble or sand. Hatching occurs at night . Nests are guarded by one or at times two adults .

🌍 Habitat & Distribution

Marine; reef-associated; depth range 0 - 60 m . Tropical; 32°N - 32°S, 30°E - 132°W south to Natal, South Africa (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.4±0.42
Food Items

a variety of benthic organisms such as algae, echinoderms, fishes, mollusks, tunicates, sponges, and

📐 Morphometrics

Length–Weight Relationship: W = 0.02951 × L2.92 (TL)
Max TL
30cm
Dorsal Spines
3
Dorsal Rays
26
Anal Rays
22

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2022

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
31.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Latitude Range
32°N – 32°S
Described By
Park, 1797

⚠️ 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

"Orange-lined triggerfish 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 18.4 g
Omega-3 (total) 118 mg

🔬 Mercury Safety

Mercury data for Orange-lined triggerfish 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

Scientific Synonyms

Scientific Name Author Year Status
Balistapus undulates Park 1797 Synonym
Balistes aculeatus minor Forsskål 1775 Synonym
Balistes aculeatus viridis Bennett 1828 Synonym
Balistes lineatus Bloch & Schneider 1801 Synonym
Balistes minor Forsskål 1775 Synonym
Balistes porcatus Gronow 1854 Synonym
Balistes sesquilineatus Lay & Bennett 1939 Synonym
Balistes undulatus Park 1797 Synonym
Balistopus undulatus Park 1797 Synonym

🦠 Common Diseases

The following diseases are known to affect Orange-lined triggerfish.

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 60 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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