Blue trevally
📖 Overview
Adults are found in coastal waters adjacent to sandy beaches; also found to depths of 60 m, often near reefs . Pelagic . Singly or in small groups . They feed mainly on mollusks, benthic crustaceans, and occasionally on small fish that are abundant in the lagoons. Excellent food fish , the flesh is rarely poisonous. Minimum depth reported taken from Ref. 128797.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 9; Dorsal soft rays (total): 26 - 34; Anal spines: 3; Anal soft rays: 21 - 26. : fusiform / normal; Cross section: compressed.
🌀 Behaviour
Behavioural data for Blue trevally is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; brackish; reef-associated; depth range 0 - 60 m . Tropical; 37°N - 35°S, 25°E - 127°W East Africa (to Port Elizabeth, South Africa, Ref.
🌿 Ecology
mollusks, benthic crustaceans, and occasionally on small fish (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🎣 Angling Guide
- medium-heavy 7ft spinning rod
- 30-50 lb braid
- fluorocarbon leader
- grass flats
- oyster bars
- marsh drains
- deeper channel edges
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.
🍽️ Edibility & Flavour
"Ferdauia Ferdau is an edible species."
- 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
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Per 100g cooked - Source: USDA FoodData Central
| Nutrient | Amount |
|---|---|
| Protein | 20.3 g |
| Omega-3 (total) | 173 mg |
🔬 Mercury Safety
Mercury data for Blue trevally has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
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