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🌊 Marine Least Concern ⚠️ Venomous ⚡ Venomous 🌡️ Tropical

Yellowfin surgeonfish

Acanthurus xanthopterus Valenciennes, 1835
Max Length
70 cm
Max Weight
-
Lifespan
34 yrs
Trophic Level
2.9
Depth
1–100 m
Climate
Tropical
Resilience
Very low
Vulnerability
37.00/100
Typical Length
50 cm
Depth Zone
reef

📖 Overview

Live in various reef habitats, sand slopes and lagoons . Juveniles inhabit shallow, protected, turbid inshore waters while adults prefer deeper areas of protected bays and lagoons. Also in outer reef areas . Benthopelagic . Schooling species, feed on diatoms, detritus film of sand, filamentous algae, hydroids, and pieces of fish . Probably the only surgeonfish that readily takes bait .

Scientific Name
Acanthurus xanthopterus
Authority
Valenciennes, 1835
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
70 cm
Lifespan
34 years
Depth Range
1–100 m
Latitude
35°S – 35°N
Trophic Level
2.9
Resilience
Very low
Vulnerability
37.00/100
Water Temp
24–28 °C
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 8 - 9; Dorsal soft rays (total): 25 - 27; Anal spines: 3; Anal soft rays: 23 - 25. Body purplish gray when alive; grayish brown when preserved; a region of dull yellow in front of eye, a lesser extension posterior to lower part of eye; outer 1/3 of pectoral fin yellow, extreme distal part hyaline; dorsal and anal fins yellowish grey basally, dull yellow distally; caudal fin base whitish; caudal fin purplish. Anterior gill rakers 16-24, posterior 17-22. Caudal spine small. : short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Yellowfin surgeonfish is currently being reviewed.

🦐 Diet

Acanthurus xanthopterus feeds on diatoms, detritus film of sand, filamentous algae, hydroids, and pieces of fish. It is probably the only surgeonfish that readily takes bait.

aquatic invertebrates
small fish
algae
detritus

🥚 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 - 90 m . Tropical; 24°C - 28°C ; 35°N - 35°S, 23°E - 77°W East Africa to the Hawaiian Islands and French Polynesia, north to southern Japan, south to the Great Barrier Reef and New Caledonia.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
2.9±0.23
🐠 Schooling
Food Items

diatoms, detritus film of sand, filamentous algae, hydroids, and pieces of fish (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.02399 × L2.96 (TL)
Max TL
70cm
Dorsal Spines
9
Dorsal Rays
26
Anal Spines
3
Anal Rays
24

🌡️ Water Parameters & Tolerance

Temperature Range
24–28°C
Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2010

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
37.00/100
Moderate vulnerability
Trophic Level
2.9
Omnivore / Planktivore
Body Shape
Short and / or deep
Climate Zone
Tropical
Latitude Range
35°N – 35°S
Described By
Valenciennes, 1835

⚠️ 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

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Cuvier's Surgeonfish · Purple Surgeonfish · Ring-tailed Surgeonfish · Ringtailed surgeonfish · Yellow-mask Surgeon · Yellow-masked Surgeon · Yellowfin Surgeonfish · Yellowmask Surgeonfish
🌍AFR Geelvin-doktervis
🇸🇦Arabic Anfoos · Fardh · Faridh
🏳️Catalan Peix cirurgià d'aleta groga
🌍CES bodlok žlutoploutvý
🌍CHA Hugupao · Ugupao
🇩🇰Danish Gulfinnet Kirurgfisk
🇩🇪German Gelbflossen-Doktorfisch
🌍EST Kollasemaskiga kirurgkala
🌍FIJ Balagi · Balagi nawa · Iakere
🇫🇷French Chirurgien aile jaune · Chirurgien à ailes jaunes · Chirurgien à nageoires jaunes · Chirurgien à nageoires jaunes, Poisson docteur à nageoires jaunes · Chirurgien à pectorale jaune · Poisson Docteur à Nageoires Jaunes
🇮🇹Italian Pesce chirurgo di Cuvier · Pesce chirurgo pinna gialla · Pesce chirurgo pinne gialle
🇯🇵Japanese Kurohagi · クロハギ
🌍MAH Kabat
🌍MSA Barat-barat · Debam · Debam sirip kuning · Dengkis
🇵🇹Portuguese Cirurgião Barbatana Amarela
🌍SIN Orava · Peela
🌍SOM Kaxan
🇪🇸Spanish Chancho Aleta Amarilla · Cirujano de Aleta Amarilla · Navajón Aleta Amarilla · Pez Cirujano · Pez Cirujano Púrpura · cirujano aleta amarilla
🌍TAH Parai · para'i
🌍TGL Indangan · Labahita · Mangadlit
🌍THA ปลาขี้ตังเบ็ดปีกเหลือง
🇨🇳Chinese 黃鰭刺尾魚 · 黃鰭刺尾鯛

🦠 Common Diseases

The following diseases are known to affect Yellowfin surgeonfish.

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 25 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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