Island mackerel
📖 Overview
Epipelagic, neritic species, occurring in waters where surface temperatures do not fall below 17°C. Forms schools of equally sized individuals. Feeds on the largest zooplankton organisms, thus complementing the planktonic food spectrum of the other two Rastrelliger species.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 8 - 11; Dorsal soft rays (total): 12; Anal spines: 0; Anal soft rays: 12; Vertebrae: 31. Head longer than body depth. Maxilla covered by lachrymal bone. Swim bladder present. Interpelvic process small and single. Anal spine rudimentary. Bristles on longest gill raker, 30 to 55 on one side. Gill rakers do not extend far into mouth. A black blotch behind pectoral fin base. The belly is yellowish silver; 2 to 6 large spots are at the base of the first dorsal fin; tow faint stripes are at the level of the lateral line in some specimens.: fusiform / normal; Cross section: oval.
🌀 Behaviour
Behavioural data for Island mackerel is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; pelagic-neritic; oceanodromous ; depth range 2 - 150 m . Tropical; 27°N - 24°S, 79°E - 176°W West Pacific: India north to Taiwan, and east to Fiji.
🌿 Ecology
the largest zooplankton organisms, thus complementing the planktonic food spectrum of the other two
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🎣 Angling Guide
- heavy 30-80 lb class trolling rod
- conventional reel
- 80-130 lb wind-on leader
- temperature breaks
- floating debris
- current edges
- offshore seamounts
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ International management (ICCAT, WCPFC). Strict quotas and size limits.
🍽️ Edibility & Flavour
"Island mackerel 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
Detailed nutritional data for Island mackerel is currently being compiled from USDA FoodData Central.
🔬 Mercury Safety
Mercury data for Island mackerel has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (oily fish average)
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🔍 Similar Species
👥 Community & Contribute
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