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🌊 Marine Least Concern 🍽️ Edible 🐠 Aquarium 🌡️ Subtropical

Doublesash butterflyfish

Chaetodon marleyi Regan, 1921
Max Length
20 cm
Max Weight
-
Lifespan
-
Trophic Level
2.7
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
22.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Inhabit rocky and coral reefs . Found among weeds in estuaries . Oviparous . Form pairs during breeding .

Scientific Name
Chaetodon marleyi
Authority
Regan, 1921
Habitat
Marine
Climate
Subtropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
20 cm
Trophic Level
2.7
Resilience
High
Vulnerability
22.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 11; Dorsal soft rays (total): 23 - 24; Anal spines: 3; Anal soft rays: 18 - 19. : short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Doublesash butterflyfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

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

Form pairs during breeding .

🌍 Habitat & Distribution

Marine; brackish; reef-associated; depth range ? - 120 m . Subtropical; 10°S - 36°S, 18°E - 42°E South Africa.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish 🪸 Reef Associated
Trophic Level
2.7±0.24

📐 Morphometrics

Length–Weight Relationship: W = 0.02291 × L3 (TL)
Max TL
20cm
Dorsal Spines
11
Dorsal Rays
24
Anal Spines
3
Anal Rays
19

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
22.00/100
Low vulnerability
Trophic Level
2.7
Omnivore / Planktivore
Body Shape
Short and / or deep
Climate Zone
Subtropical
Described By
Regan, 1921

🍽️ Edibility & Flavour

"Doublesash butterflyfish 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 19.3 g
Omega-3 (total) 203 mg

🔬 Mercury Safety

Mercury data for Doublesash butterflyfish 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 Butterfly-fish · Butterflyfish · Doubledash Butterflyfish · Marley's Butterflyfish · doublesash butterflyfish
🌍AFR Bontvis
🏳️Catalan Peix papallona de KwaZulu-Natal · Peix papallona de Natal
🌍CES klipka Marleyova
🇩🇰Danish Dobbeltbåndet Fanefisk
🇩🇪German Marleys Falterfisch
🇮🇹Italian Pesce farfalla di Marley
🇵🇹Portuguese Peixe-borboleta-sul-africano
🇪🇸Spanish Pez Mariposa de Marley
🌍TUR kelebek baligi

Scientific Synonyms

Scientific Name Author Year Status
Chaetodon notophthalmus Ahl 1923 Synonym

🦠 Common Diseases

The following diseases are known to affect Doublesash butterflyfish.

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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