Also known as
- White Tuna US
- Scaleless Tuna US
- Dog Tuna US
- Pegtooth Tuna US
- Whiteflesh Tuna US
Identification
An Indo-Pacific reef-edge apex predator with a sleek scaleless torpedo build engineered for both patient ambush and explosive intercepts. The defining heavy-jig species of tropical reefs.
- Long, sharp, outward-canting canine teeth resembling dog teeth — the defining identification mark
- Blue-green to brilliant blue-black back grading to silver flanks and white belly
- White tips on rear dorsal finlets near the caudal peduncle, with black tips on the tail
- Completely scaleless body — unique among tuna relatives
- Strongly curved lateral line dipping toward the lower body at mid-length
Where it holds
- Offshore
- Coral Reefs
Behaviour
An Indo-Pacific reef-edge apex predator — the most aggressive of the tropical tuna relatives. Schools of 4-6 patrol steep walls, deep drop-offs, and channel passes; larger fish become increasingly solitary. Lurks at 30-90m and intercepts bait with explosive bursts where tidal currents concentrate prey around reef structure. Tropical and subtropical Indo-Pacific 20-28°C (68-82°F) — Maldives, Andamans, Indonesia, Red Sea, GBR, Rowley Shoals heritage destinations. Peak activity at dawn and dusk.
Diet: Small Mackerel, Fusiliers, Rainbow Runners, Scads, Small Bonito, Small Squid
How it's caught
Line Fishing
Jigging
The defining Indo-Pacific deep-jig fishery — the species that built modern PE6-8 heavy-jig culture. Drop 200-400g knife or stick jigs to 30-90m at reef-edge drop-offs and channel passes; rip with hard 1m sharp-cadence sweeps. Most strikes come on the rip-up. PE6-8 braid with 6m of 60-100kg fluorocarbon topshot; reef-tested gear mandatory — these fish bolt straight back to structure.
Live Lining
The deadliest trophy presentation — drop a live bonito, rainbow runner, fusilier, or small mackerel on a weighted rig to keep bait at 30-90m along reef edges. Use 12/0-16/0 non-offset circle hooks with 60-100kg fluorocarbon leader. Drift along walls and drop-offs where current concentrates prey. Heavy gear non-negotiable for trophy fish.
Trolling
A locating method along reef-edge perimeters and channel mouths. Pull a spread of large deep-diving plugs, big stickbaits, and skirted lures at 6-9 knots. Downriggers extend reach to 20-40m where bigger fish patrol. Heavy 24-37kg gear minimum — these fish hit hard and reef-dodge instantly.
Spinning
Productive when fish push surface bait above reef structure. Cast 200-300g large poppers and stickbaits with PE8-10 topwater setups. Stop-and-go retrieve — pause 3-5 seconds after pops as strikes often come on the pause. Heavy 80-150lb fluorocarbon leader and reef-tested terminal hardware mandatory.
Spear Fishing
Inshore Spearfishing
A heritage Indo-Pacific freedive target on outer-reef edges and channel drop-offs. Demands deep-water capability to reach 20-40m holding zones, heavy reef gun for stopping power, reef-tested float line, and immediate float-rig commitment to prevent reef-cutoffs. Single-shot opportunistic encounters rather than active hunting.
