Gymnosarda unicolor

Dogtooth tuna

Q: What is the best season to catch Dogtooth tuna?

March, April, May, June, July, August, September, October, November. This species shows peak fishing activity in spring, summer and autumn, when the productivity index (FPI) reaches its highest values.

Extremely powerful tropical tuna that lives near deep reefs.

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Size80-180 cm

Weight10-100 kg

Depth10-300 m

Difficulty★★★★★

Lifespan12 years

FamilyScombridae

Overview

Extremely powerful tropical tuna that lives near deep reefs.

Identification

Prominent and sharp teethFusiform bodyPronounced pectoral finsLarge eyesWell-defined lateral lineNo scales on the bodyBulky jawsSturdy caudal peduncle

Body: The body is elongated and hydrodynamic, typical of large pelagic predators.
Colouration: The back is dark blue with a silvery sheen on the sides and belly.
Sexual dimorphism: Absent/barely noticeable
Growth: Medium, grows quickly in the first years of life

Taxonomy

Family: Scombridae
Order: Scombriformes
Class: Actinopterygii

Related species

Thunnus albacaresThunnus thynnusKatsuwonus pelamisEuthynnus affinisAuxis rocheiThunnus obesus

Habitat & distribution

Environment: coast, reefs, open_sea
Preferred bottom: reef, rock
Geographic distribution: Lives in the tropical and subtropical waters of the Indo-Pacific Ocean, from the eastern African coast to the Pacific islands.
Micro-habitat: Inhabits deep reefs and seeks shelter in rock crevices during hunting.

Prefers reefs for their abundance of prey and hiding spots.

Presence by sea area

Af Mar Rosso NordPeak

Af Mar Rosso CentroPeak

Af Indiano EstPeak

As Mar ArabicoPeak

As Mar Cinese SudPeak

Au Nw ShelfPeak

Au Gbr NordPeak

Au Gbr CentroPeak

Au Coral SeaPeak

Oc FijiPeak

Oc PolinesiaPeak

Oc MicronesiaPeak

Oc PapuaPeak

Open Pacifico TropPeak

Open Indiano TropPeak

Diet

Primary prey: flying fish, mackerel, jacks
Secondary prey: squid, cuttlefish, small pelagic fish
Occasional prey: shrimp, jellyfish
Feeding behaviour: Aggressive and solitary hunter, strikes its prey with sudden bursts.
Natural predators: sharks, larger tuna, marlin

Diet varies depending on the season and prey availability.

Behaviour

Activity: diurnal
Social behaviour: solitary
Aggressiveness: high
Migration: Resident but may make short moves in search of food.
Seasonal behaviour: More active during warmer months, with activity peaks during the growth season.
Juveniles: Juveniles tend to stay closer to reef shelters.
Adults: Adults are often solitary and swim in open waters.

Reproduction

Spawning season: March, April, May
Spawning depth: between 20 and 60 meters
Eggs: Small pelagic eggs
Larval stage: The larvae are pelagic and feed on plankton until developing sufficient mobility to hunt.
Sexual maturity: varies between 4 and 6 years

When to catch Dogtooth tuna

Activity calendar

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

PeakGoodLowInactive

Activity by season

Spring

85%

Summer

95%

Autumn

85%

Winter

60%

Best times

Dayalba, mattina

Night—

This species shows peak fishing activity in spring, summer and autumn, when the productivity index (FPI) reaches its highest values.

Fishing activity decreases in winter, when conditions are less favourable.

Ideal conditions

Atmospheric pressure

Low

Actively hunts along the reef.

Medium

Regular activity.

High

Deeper and more selective.

Barometric trend

Water temperature

10°COptimal zone: 14-24°C27°C

Preferred tide: moving

Where to catch it

Best spots

near reefsunderwater ledgesmarine pilesdeep water

Bottom preference

Rock

100%

Mixed

90%

Seagrass

70%

Sand

50%

Mud

30%

Spot type

Cliff

100%

Reef

100%

Harbour

80%

Pier

80%

Boat

60%

Beach

40%

Fishing techniques

Recommended

trollingjig spinningdriftingspearfishing

Other applicable

Trolling OceanicoVertical JiggingSlow JiggingLive BaitingSpinning PesanteDriftingDrifting LeggeroPoppingSpinning OffshoreTraina Costiera

Recommended baits

squid luresbaitfishmetal jigsimitative artificials

Baits by pressure

Low

Metal jig extra heavy (300g+)Metal jig pesante (100-300g)Popper grande (GT)Speed jigStickbait lungo (pelagici)Cedar plugSkirted trolling (Pusher/Chugger)

Medium

Sgombro vivoSugarello vivoEsca viva (generica)Sardina viva

High

Metal jig extra heavy (300g+)Metal jig pesante (100-300g)Popper grande (GT)

Catch & handling tips

Fight: Strong and unpredictable fight with fast and powerful runs.
Handling: Handle with care due to sharp teeth.
Release: Ensure quick release, preferably without removing it from the water.

Curiosities & culture

Record catches: The dogtooth tuna can reach weights over 220 lbs, with the IGFA world all-tackle record held by a specimen of 236 lbs caught in Kadavu Island, Fiji, in 1998.
In the kitchen: Delicious meat in sashimi and grilled recipes.
Cultural notes: Considered a challenge for sport fishermen due to its strength and speed.
Historical notes: Traditionally caught by local communities for its food and sport value.

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Frequently asked questions

What is the best season to catch Dogtooth tuna?

March, april, may, june, july, august, september, october, november. This species shows peak fishing activity in spring, summer and autumn, when the productivity index (FPI) reaches its highest values.

Which techniques work best for Dogtooth tuna?

trolling, jig spinning, drifting, spearfishing

What does Dogtooth tuna feed on?

flying fish, mackerel, jacks

At what depth does Dogtooth tuna live?

10-300 m. Inhabits deep reefs and seeks shelter in rock crevices during hunting.