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Diadromous Near Threatened 🍽️ Edible 🌡️ Tropical

Senegalese tonguesole

Cynoglossus senegalensis Kaup, 1858
Max Length
66.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
10–110 m
Climate
Tropical
Resilience
Low
Vulnerability
64.00/100
Typical Length
25 cm
Depth Zone
demersal

📖 Overview

Found on sand and mud bottoms of coastal waters , including estuaries and fresh water lagoons . Feeds on (lamelibranch) mollusks, shrimps, crabs and fish . Sold as frozen filet under the name 'filets de sole' .

Scientific Name
Cynoglossus senegalensis
Authority
Kaup, 1858
Habitat
Diadromous
Climate
Tropical
IUCN Status
NT
Max Length
66.5 cm
Depth Range
10–110 m
Latitude
18°S – 22°N
Trophic Level
3.6
Resilience
Low
Vulnerability
64.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 119 - 125; Anal spines: 0; Anal soft rays: 93 - 99. Diagnosis: body flat and elongate; snout broadly rounded, its rostral hook rather short, extending to level of anterior nostril; angle of mouth extending backwards beyond level of lower eye . Eyes small and placed on left side of head and, unusual for cynoglossids, eyes well separated from each other, separated by wide interorbital space . Ctenoid scales on eyed side and cycloid scales on blind side; 12 caudal fin rays . 2, sometimes 3, lateral lines on eyed side and a single one on blind side . 89 - 138 tubular mid-lateral line scales. Generally 17-18, exceptionally 16 or 19, transversal scales between mid-lateral line and margino-dorsal lateral line . Colouration: eyed side more or less uniformly brown, with greenish reflections in life; opercular region often blackish; blind side whitish . Sometimes black spot present at bases of posterior anal and dorsal fin rays; fins often spotted .Cross section: flattened.

🌀 Behaviour

Behavioural data for Senegalese tonguesole is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Marine; freshwater; brackish; demersal; depth range 10 - 110 m . Tropical; 22°N - 18°S, 18°W - 14°E

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish ⬇️ Benthic
Trophic Level
3.6±0.58
Food Items

(lamelibranch) mollusks, shrimps, crabs and fish (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00288 × L3.07 (TL)
Max TL
66.5cm
Dorsal Rays
122
Anal Rays
96

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2012

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
64.00/100
High vulnerability
Trophic Level
3.6
Predator
Climate Zone
Tropical
Latitude Range
22°N – 18°S
Described By
Kaup, 1858

🍽️ Edibility & Flavour

"Senegalese tonguesole 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 18.1 g
Omega-3 (total) 104 mg

🔬 Mercury Safety

Mercury data for Senegalese tonguesole 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

🔬 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 large tonguesole · Senegalese tonguesole
🇩🇪German Senegalesische Hundszunge
🇫🇷French sole-langue sénégalaise
🇳🇱Dutch Senegalese hondstong
🇷🇺Russian Сенегальский косорот

Scientific Synonyms

Scientific Name Author Year Status
Arelia senegalensis Kaup 1858 Synonym
Cynoglossus goreensis Steindachner 1882 Synonym
Cynoglossus guineensis Osório 1909 Synonym
Cynoglossus senegalensis simulator Chabanaud 1949 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 716 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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