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🌊 Marine Least Concern 🍽️ Edible 🌡️ Subtropical

Royal flagfin

Aulopus filamentosus Bloch, 1792
Max Length
44 cm
Max Weight
-
Lifespan
-
Trophic Level
4.2
Depth
50–1000 m
Climate
Subtropical
Resilience
Medium
Vulnerability
41.00/100
Typical Length
30 cm
Depth Zone
demersal

📖 Overview

Royal flagfin (Aulopus filamentosus), first described by Bloch, 1792 is a large fish in the family Aulopidae (order Aulopiformes). Adults typically reach 44.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 50 to 1000 metres. It occurs in Subtropical waters. Diet is predominantly piscivorous, targeting other fish and larger prey. On the IUCN Red List, it is classified as Least Concern.The species is important as a food fish and considered a sustainable seafood option under current management. As a member of the Aulopidae, it shares life-history and morphological traits with its relatives in the group.

Scientific Name
Aulopus filamentosus
Authority
Bloch, 1792
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
44 cm
Depth Range
50–1000 m
Trophic Level
4.2
Resilience
Medium
Vulnerability
41.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Royal flagfin is currently being compiled.

🌀 Behaviour

Behavioural data for Royal flagfin is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

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

🌍 Habitat & Distribution

Marine; demersal; depth range 50 - 1000 m , usually 100 - 200 m . Subtropical; 46°N - 8°N, 98°W - 36°E south to Cape Verde and Senegal.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
4.2±0.61

📐 Morphometrics

Length–Weight Relationship: W = 0.0055 × L3.13 (TL)
Max TL
44cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2013

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
41.00/100
Moderate vulnerability
Trophic Level
4.2
Apex / Top predator
Climate Zone
Subtropical
Described By
Bloch, 1792

🍽️ Edibility & Flavour

"Royal flagfin 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 16.1 g
Omega-3 (total) 232 mg

🔬 Mercury Safety

Mercury data for Royal flagfin 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 Mediterranean Flagfin · Royal flagfin · yellowfin aulopus
🌍COS Acciartula
🇩🇪German Faden-Segelfisch
🌍ELL Stictogaidouropsaro · Στικτογουρλομάτης
🇫🇷French Limbert royal
🌍HEB חומטנון המעמקים
🇭🇷Croatian Barjaktarka
🇮🇹Italian Lacerta · Lacerto · Merluzzo francese · Merluzzo imperiale · Tiru di sicca · Trigghia masculina
🌍MLT Zumbrell
🇵🇹Portuguese Lagarto do Alto · Lagarto-do-mar · Peixe-lagarto
🇪🇸Spanish aulopus amarillento · Lagarto de Hondura · Lagarto Real · Ojo de Piedra
🌍SQI peshku bajrak · Pikaloshi · Pikaloshja
🌍TUR filamentli zurna baligi

Scientific Synonyms

Scientific Name Author Year Status
Aulopus filifer Valenciennes 1839 Synonym
Aulopus maculatus Valenciennes 1839 Synonym
Aulopus nanae Mead 1958 Synonym
Autopus filamentosus Bloch 1792 Synonym
Osmerus saurus Risso 1810 Synonym
Osmerus saurus saurus - - Synonym
Salmo filamentosus Bloch 1792 Synonym
Salmo tirus Rafinesque 1810 Synonym
Saurus lacerta Risso 1827 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 676 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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