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🌊 Marine Least Concern 🍽️ Edible 🐠 Aquarium 🌡️ Tropical

Saint Helena butterflyfish

Chaetodon sanctaehelenae Günther, 1868
Max Length
18 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
0–50 m
Climate
Tropical
Resilience
High
Vulnerability
20.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Adults are common in shallow waters. Usually observed in pairs or large groups. Oviparous , monogamous . Form pairs during breeding . Called a cunning fish since it can nibble the bait from a hook without taking the hook into its mouth. The juvenile Thalassoma sanctaehelenae has been observed cleaning the cunningfish of its parasites .

Scientific Name
Chaetodon sanctaehelenae
Authority
Günther, 1868
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
18 cm
Depth Range
0–50 m
Trophic Level
3.3
Resilience
High
Vulnerability
20.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Acanthuriformes
Acanthuriformes
Family
Chaetodontidae
Chaetodontidae
Genus
Chaetodon
Chaetodon
Species
Saint Helena butterflyfish
Chaetodon sanctaehelenae

🐟 Physical Description

Dorsal spines (total): 13; Dorsal soft rays (total): 21 - 23; Anal spines: 3; Anal soft rays: 19. : short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Saint Helena 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

Distinct pairing . Monogamous mating is observed as both obligate and social .

🌍 Habitat & Distribution

Marine; reef-associated; non-migratory ; depth range 0 - 50 m , usually 0 - 15 m . Tropical Southeast Atlantic: Known only from the Ascension and St.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Migration
Non-migratory
Trophic Level
3.3±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.02291 × L3 (TL)
Max TL
18cm
Dorsal Spines
13
Dorsal Rays
22
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
20.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Günther, 1868

🍽️ Edibility & Flavour

"Cunningfish 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 Saint Helena butterflyfish is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Saint Helena 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 Cunningfish · Saint Helena butterflyfish · St. Helena Butterflyfish

Scientific Synonyms

Scientific Name Author Year Status
Chaetodon sanctae helenae Günther 1868 Synonym
Chaetodon sanctaehelena Günther 1868 Synonym
Chaetodon sanctaehelena uniformis Ahl 1923 Synonym
Chaetodon sanctaehelenae uniformis Ahl 1923 Synonym

🦠 Common Diseases

The following diseases are known to affect Saint Helena butterflyfish.

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 2 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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