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Diadromous 🍽️ Edible 🌡️ Tropical

Longarm mullet

Osteomugil cunnesius Valenciennes, 1836
Max Length
41 cm
Max Weight
-
Lifespan
-
Trophic Level
2.4
Depth
0–3 m
Climate
Tropical
Resilience
Medium
Vulnerability
34.00/100
Typical Length
25 cm
Depth Zone
demersal

📖 Overview

Occur in shallow coastal waters, including estuaries and backwaters, frequently enters freshwater. Form larger aggregations during spawning which takes place at sea. Young individuals enter tidal rivers. Feed on organic matter contained in sand and mud . Oviparous, eggs are pelagic and non-adhesive . Marketed fresh and salted. Decays rapidly, but well liked when fresh.

Scientific Name
Osteomugil cunnesius
Authority
Valenciennes, 1836
Habitat
Diadromous
Climate
Tropical
Body Shape
Fusiform / normal
Max Length
41 cm
Depth Range
0–3 m
Trophic Level
2.4
Resilience
Medium
Vulnerability
34.00/100
Migration
Catadromous
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Osteomugil
Osteomugil
Species
Longarm mullet
Osteomugil cunnesius

🐟 Physical Description

Dorsal spines (total): 4 - 5; Dorsal soft rays (total): 9 - 10; Anal spines: 2 - 3; Anal soft rays: 9. : fusiform / normal; Cross section: circular.

🌀 Behaviour

Behavioural data for Longarm mullet is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

Size at Maturity
15.1cm TL

🌍 Habitat & Distribution

Marine; freshwater; brackish; demersal; catadromous ; depth range 0 - 3 m . Tropical West Pacific (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish ⬇️ Benthic
Migration
Catadromous
Trophic Level
2.4±0.21
Food Items

organic matter contained in sand and mud (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01148 × L2.95 (TL)
Max TL
41cm
Dorsal Spines
5
Dorsal Rays
10
Anal Spines
3
Anal Rays
9

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
34.00/100
Low vulnerability
Trophic Level
2.4
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Valenciennes, 1836

🍽️ Edibility & Flavour

"Osteomugil Cunnesius 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 18.3 g
Omega-3 (total) 253 mg

🔬 Mercury Safety

Mercury data for Longarm mullet 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

👥 Community & Contribute

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