Eastern triangular butterflyfish
📖 Overview
Adults occur in lagoon and seaward reefs. They feed exclusively on the polyps of the tubular Acropora corals. They swim in pairs and are territorial. Oviparous . Form pairs during breeding .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 11 - 12; Dorsal soft rays (total): 23 - 26; Anal spines: 3; Anal soft rays: 20 - 22. : short and / or deep; Cross section: compressed.
🌀 Behaviour
Behavioural data for Eastern triangular butterflyfish is currently being reviewed.
🦐 Diet
🥚 Reproduction
Distinct pairing . Monogamous mating is observed as both obligate and social .
🌍 Habitat & Distribution
Marine; reef-associated; non-migratory ; depth range 5 - 20 m . Tropical; 36°N - 26°S, 96°E - 168°W north to southern Japan, south to New Caledonia and New South Wales, Australia.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Eastern triangular butterflyfish is an edible species."
- 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
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Per 100g cooked - Source: USDA FoodData Central
| Nutrient | Amount |
|---|---|
| Protein | 18.6 g |
| Omega-3 (total) | 113 mg |
🔬 Mercury Safety
Mercury data for Eastern triangular butterflyfish has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🦠 Common Diseases
The following diseases are known to affect Eastern triangular butterflyfish.
🔍 Similar Species
👥 Community & Contribute
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