Threadfin jack
📖 Overview
Threadfin jack (Euprepocaranx dorsalis), first described by Gill, 1863 is a large fish. Adults typically reach 60.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 60 to 100 metres. It occurs in Tropical 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 valued as a game and sport species.
🔬 Taxonomy
🐟 Physical Description
Body compressed and sub-oval in juveniles, oblong in adults; dorsal profile of snout slightly oblique, then abruptly vertical over anterior edge of premaxilla; lobes of second dorsal and anal fins very long; ventral part of chest scaleless up to origin of pectoral fins; body silvery blue with yellow golden highlights; dorsal side of operculum with a black spot; base of second dorsal fin membranes with small black spots .
🌀 Behaviour
Behavioural data for Threadfin jack is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; benthopelagic; oceanodromous ; depth range 60 - 100 m . Tropical; 23°N - 1°S
🌿 Ecology
📐 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
"Euprepocaranx Dorsalis 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 | 18.8 g |
| Omega-3 (total) | 278 mg |
🔬 Mercury Safety
Mercury data for Threadfin jack has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
👥 Community & Contribute
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