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Articles » Fish Guides » Saltwater Fish » Dogtooth Tuna Fishing Tips: How to Catch Gymnosarda Unicolor

Dogtooth Tuna Fishing Tips: How to Catch Gymnosarda Unicolor

Dogtooth tuna are one of the rarest sportfish to land.

It’s generally hard to find and land the big ones.

dogtooth tuna fishing tips teeth
Lakshmi captured this amazing head on shot. Look at those teeth! Source

Also known as the scaleless tuna (except on the corselet and along the lateral lines), jackass, pegtooth tuna, and dogfish tuna, this fish is a lesser-known member of the Scombridae family.

What’s crazy is that it’s actually a bonito.

Overview

The dogfish tuna can be found near reefs and it is noted for its complete lack of scales except the few it has along the sides of the lateral line and the corselet. The fish has long and conical features with a lateral line that is prominent and wavy.

It is also considered the only bonito that has a swim bladder along with an intra-pelvic process. The tuna’s teeth are not only on the jaw but in two patches on the tongue.  It has no spots or other marks on its body.

The dogtooth tuna is not endangered due to overfishing.

Dogfish Tuna Facts

Scientific NameGymnosarda Unicolor
Common Name(s)Dogtooth Tuna, scaleless tuna, jackass, pegtooth tuna, white tuna, lizard mouth tuna, and dogfish tuna
FamilyScombridae
Identifying CharacteristicsHas no scales, marks or spots on the body. The teeth are in patches on the tongue and it has conical features.
Depth Range10 to 300 meters
HabitatInhabits tropical and subtropical areas of the Indian and western Pacific Oceans.
LimitsCheck your local regulations
World Record Dogfish288 pounds and 12 ounces
StatusLeast concerned

How to Catch Dogtooth Tuna

Dogtooth tuna is notoriously difficult to catch and for good reason. Once they snatch the bait the fish dives down fast and since it is quite strong, you will have a fight on your hands. It makes a searing, long and fast run when it is hooked. In other words, you should be prepared to lose a lot more fish than you catch.

Bait, particularly stick baits are the first choice for anglers who are fishing for this tuna. You can also use larger lures or large stick baits if you are fishing at a spot that is known for having a lot of dogtooth such as deep reef edges. The fish can be quite sneaky and may not bite immediately so you will have a long wait ahead of you. It is also attracted by poppers on the surface of the water.

Tuna Rig

Dogtooth tuna can also be caught with trolling or jigging. If you are using the former, use it to catch large ones by using capable tuna reel like the Penn International VIS 2 big game trolling reels. Load it up with 100 lb braided line and make sure you use a metal leader. If you prefer the latter, use a tuna rod that is light but sturdy enough to handle big catches.

PENN International VIS 2 Speed Reel
  • Machined and anodized aluminum body and side...
  • Stainless steel main and pinion gears
  • Quick shift II 2 speed System

Doggy Fish Fishing Tactics

  • Use short and stocky dark grey or black jigs between 200 to 300 grams to get a dogtooth’s attention.
  • If you are popping or stick baiting, do so at sunset on reef heads that are over 40 meters.
how to catch dogtooth tuna
I dream of spearing one of these dogtooth tunas in the future! Source

Dogtooth Tuna Fishing Tips

  1. Dogtooths usually attack lures from the rear so reel in the lure regularly to entice them into biting. Otherwise, the fish may lose interest and swim off.
  2. Sharks are usually near where you will find dogtooth tuna. To prevent the predator from stealing your catch, get the tuna into the boat as fast as possible.
  3. It’s been known to take plastics, feathers, plugs, spoons, strip baits, mullet, mackerel, squid…and more.

When to Catch Dog Tooth Tuna

Dogtooth tuna can be found and caught all year round but the best weather for popping and jigging for them is in the summertime especially if you are in Fiji. The months between January and May are the best times to catch hoards of this tuna. This is the time of the year when the weather is calm enough to allow anglers to get close to barrier reef breakers, a prime spot for dogtooth tuna.

The best part about this time of year on the island is that the rains are short-lived and usually happen at night when most anglers prefer to remain on the land. A typical summer day sees clear skies in the early hours with the occasional short showers in the evening.

Dogtooth Tuna Spearfishing

Do you want to spear fish tuna?

Then you’re going to need to dive down to steep drop-offs or reefs that are adjacent to deep water to find doggies. The fish will be in the highest current areas. Then lie on or against the reef rather and don’t hang in the water. Doggies are curious by nature and will come close to check you out if you don’t move too much. Use flashers to attract them.

Most of the time dogtooths swim right up to divers if they wait patiently. This is much better than diving down to them. Once this tuna sees you coming at it, it will speed away and will be long gone by the time your dive is complete.

Make sure that your first shot is precise as well. Once you spear the fish, it will put up a massive and violent fight. If the spear is not lodged in firmly in its flesh, it will tangle the line and tear up your gear. To punch through vital areas and slow it down, aim for the spear to come out the eye on the opposite side of the fish.

Fly Fishing for Dogtooth

Some of you might find trolling or spearfishing too easy. Well if that’s the case, maybe it’s worth trying to catch these monsters on a fly rod and reel.

How to Clean Dogtooth Fish

  1. Wash the tuna and lay it on a clean surface.
  2. Take a sharp knife and cut along the midsection of the tuna’s side and right back to the tail and down the back near the dorsal fin.
  3. Lift up the loin section and cut it free.
  4. Cut off the flank section in the same manner.
  5. Lay out the cut off a section and cut parallel to the table just under the skin to remove it.
  6. Cut off the skin from the meat and trim the dark meat from the loins.

Dog Tuna Fish Recipe

  • Cut dogtooth tuna into 12 chunks.
  • Wrap each chunk with a piece of pancetta and skewer with a toothpick to secure.
  • Fry the chunks in hot oil on a frying pan till the pancetta turns golden brown in color and crispy. This should not take more than 45 minutes.
  • Serve on top of coleslaw of your choice.

FAQs

Q: Where is the dogtooth tuna found?

A: Dogtooth tuna can be found around coral reefs in tropical and subtropical areas of the Indian and western Pacific Oceans.

Q: How many kinds of tuna are there?

A: There are currently 15 species of tuna in the world.

Q: Do dogtooth tuna have teeth?

A: Dogtooth tuna has large, widely spaced and conical teeth.

Insider Advice

The dogtooth tuna may be a fierce fighter but that is exactly what makes catching it such a thrill. Besides this, it was credited for being as tasty as the famous bluefin tuna.

However, before grabbing your speargun, make sure that you have the strength and stamina to catch and wrangle this aggressive fish.


The Anglers Behind This Article:

Jon Stenstrom
Founder

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