Sailfish vs. Marlin: the Battle of the Bills

Oct 11, 2023 | 6 minute read Comments
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Reading Time: 6 minutes

The world of comics has Batman and Superman, we, anglers, have Sailfish and Marlin! These mighty fish may seem similar, but in fact, they are quite different. Read on to learn the key differences, dietary habits, and superpowers of these rulers of the ocean!

A poster of Sailfish and Blue Marlin under water

The Billfish family

Marlin and Sailfish are fish species that belong to the Billfish family. They are highly predatory species, among the fastest and fiercest in the entire ocean. Although some Billfish taste mediocre and others are supposed to be a delicacy, most of the time anglers release them. The taste itself has never been the goal of anglers who chase these incredible creatures.

The truth is – these fish are the very best of sport fishing. And that’s why thousands of anglers make the effort to get them, year after year. Billfish are strong, acrobatic, lean, fast, and difficult to catch. If you want ultimate bragging rights, you’ve just got to reel them in. Luckily, Billfish are present the world over, from Australia to the Gulf of Mexico, and many places in between.

Marlin and Sailfish species

Types of Marlin

Before you compare Marlin and Sailfish stats head-to-head, it’s important to note that there is no single species called Marlin, or Sailfish.

In fact, Marlin come in four different shapes and sizes: Blue Marlin, Black Marlin, Striped Marlin and White Marlin. Each of the sub-species has quirks of its own. Blue Marlin are the largest, Black Marlin are the fastest, White Marlin are agile and elegant, and Striped Marlin are plain cool. They live in New Zealand and have stripes.

These fascinating fish have a stellar reputation among anglers for their speed and force. If you want to dive into the subject and prepare thoroughly for your next Billfish trip, then check out our in-depth guide on all things Marlin related.

Type(s) of Sailfish

As for Sailfish, some say that there are two main subspecies: Pacific Sailfish and Atlantic Sailfish. Authors that differentiate between the two claim that Atlantic specimens are on average smaller and brighter in color. Other authors recognize only one species, claiming that there are no significant differences in DNA, fin length, or dietary habits. More and more people accept the latter as evidence. That’s why you will more often find Sailfish as a single species.

What’s the difference between Marlin and Sailfish?

Marlin and Sailfish might look quite similar, at least to the untrained eye. And though they inhabit similar waters and share a similar diet (watch out, Bonito), these two species have a lot of differences:

Appearance

For one, the shape of the dorsal (back) fin is nothing alike.

Sailfish have bigger, sail-like fins (hence the name), while the dorsal fin of Marlin peaks at the front and gently slopes downward.

a visual comparison of a sailfish vs. a marlin

Hunting

Sailfish and Marlin also behave differently. While Marlin are generally loners, Sailfish move and hunt together. Often times, when you hook one Sailfish, there are a lot more “sails” nearby. Sailfish are impressively coordinated when hunting. So trained, in fact, that a lot of marine biologists nicknamed them the “wolves of the sea”.

A group of Sailfish hunting together near the surface of the ocean.

Fighting

When it comes to action and durability, Marlin are second to none. They were made to tire you out and won’t stop even after several hours. Remember the Old Man and the Sea? That’s Marlin fishing at its best.

However, Sailfish are neither weak nor feeble. They are crazy fast and will make the drag scream like it’s Judgement Day. You need to be fully focused to land them or you risk a damaged ego and a missed chance. They do tire faster than Marlin, but won’t surrender easily.

Be careful when attempting to reel in these beasts. Their bills can seriously harm you and some anglers have even been pulled off into the water by the sheer brute force of these fish. They will give their best to free themselves by violently shaking their bodies, so watch out. Don’t bring the fish near the boat before they you tire them out.

Where do Marlin and Sailfish live?

Both Sailfish and Marlin love warm waters and will travel far to stay close to them.

The following maps by FishBase, the largest database on fish species, show where you can get your dream fish.

Sailfish

You can find Sailfish anywhere in the Atlantic, Pacific, and Indian Ocean, from 50° N to about 35° S. They will rarely move past those points and only in the warmest of months.

Sailfish habitat heatmap

Marlin

Marlin are an even more migratory species, they move all around the world in search of warm waters and good food. While you can find Sailfish relatively close to the shore, sometimes only three miles from dry land (as is the case in Miami Beach or Stuart), Marlin swim farther offshore. Generally, Sailfish inhabit shallower waters, between 100 and 300 feet, while Marlin will swim in waters deeper than that, staying close to the surface.

Some places around the globe have fantastic Marlin fishing as deep waters lie only miles from the coast. When you’re in Cairns (Australia), New Zealand, Cabo San Lucas, or some other major Billfish destinations, you can get humongous Marlin on a half day trip.

Blue Marlin

Blue Marlin live in the Pacific, Atlantic, and Indian oceans in water temperatures ranging from 69 to 95°F. They usually spend the winter in warm waters, moving towards the Equator, while spring seems them swimming back into temperate waters.

Blue Marlin habitat heatmap

Black Marlin

Black Marlin live in the waters of Indo-Pacific ocean. They usually hunt near the surface of the water. Black Marlin mostly stay in tropical waters with the temperature from 75 to 80 °F. These guys are highly migratory, and some even enter the Atlantic near the Cape of Good Hope.

Black Marlin habitat heatmap

Striped Marlin

These beauties live in Indo-Pacific oceans, in tropical and warm temperate waters. They stay near the surface at all times and feed during daylight. During cold months, Striped Marlin move towards the Equator and swim away from it in warm months.

Striped Marlin habitat heatmap

White Marlin

White Marlin inhabit the waters of the Atlantic Ocean from Maine to Argentina, including the Gulf of Mexico. They move near the surface, in water temperatures of 65+°F. These fish love to migrate – from May to October they move north off the US and then make their way south during cooler months.

White Marlin habitat heatmap

What do Sailfish and Marlin eat?

Sailfish prey on creatures that swim near the surface, such as squid, Mackerel, Jacks, smaller Tunas, and flying fish. It’s best to use the “local” baitfish that inhabit the waters you’re fishing.

As for Marlin, fresh Mackerel is your best shot when it comes to live bait. Marlin aren’t picky though, so you can also try some mid-size Mahi, Tunas, and Bonefish.

There is no bulletproof bait out there, which makes the fishing even more exciting.

As a rule of thumb, you should use either live or strip bait.

Sailfish vs Marlin: Head-to-Head

Sailfish vs Marlin stats on length, weight, and speed

So, where do you stand in the Sailfish vs Marlin debate? Have you caught any of these before, and where? If you haven’t, which would you rather catch and why? Can’t wait to hear your stories in the comments below!

Author profile picture

Stefan is a writer at FishingBooker, who especially loves fly fishing.

Comments (42)

Megan

Dec 23, 2021

So I found my captain thru your site while on vacation in Jamaica. First off everybody should book with him. Not only did we catch a 150 lb marlin in addition to a barracuda, mahi, and a few tuna but to end the day we landed a 500 lb marlin. Will never forget it.

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    Lisa

    Dec 27, 2021

    Hi Megan,

    Thank you for reaching out. We’re really glad to hear that you enjoyed your trip! And, wow, a 500 lb Marlin is beyond impressive! Which Captain did you book?

    Lisa

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Mac

Oct 9, 2021

I just caught my first pacific fish, a 9ft beautiful Sailfish in cabo….Having taxiderm fix it up now…I wanted a marlin, but now I love the Sailfish look for mounting better!!!

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    Katie

    Oct 11, 2021

    Hi Mac,

    Thanks for sharing your experience. What a monster catch! Did it take you long to reel in your Sailfish?

    Tight lines,

    Katie

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Mike Mickey

Aug 3, 2021

Everyone,
I enjoyed your article very much, thank you.
Being an almost lifelong fisherman I have mostly chased trout, steelhead, and other in fresh water.
My first experience to hunt billfish (hopefully Blue Marlin) will be April of next year off of Kona. Next goal would be Sailfish off of Guatemala.
Besides a great captain and crew what would be your greatest questions/concerns regarding conditions (examples: tide change, how it affects baitfish, moon, etc.) Just curious on your thoughts.
Thanks, Mike

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    Lisa

    Aug 4, 2021

    Hi Mike,

    Thank you so much for reading and reaching out. I really hope you land a big Blue Marlin on your Kona fishing adventure. That would be a good practice before you head out for your first Sailfish!

    As for your question, I think having a professional Captain and experienced crew means a lot. If I know I’m in good hands, I wouldn’t worry about tide changes, bait, or moon… because I know that the crew won’t take me out if the fishing conditions are not right.

    I hope this makes sense.

    Thanks! Lisa.

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Jim

Jun 20, 2021

An old man is loaded with memories of trips past with two such trips resulting in catching sail. One was off the coast of Wilmington, NC in a tournament. I had bananas on the boat, a no no! We caught two bills that day and on the way back in, I asked the captain how many times two have been boated on the same day. Never was the reply. The mate really got on me for having bananas, and he was reminded rather sucintly the bananas were the reason for the great day. This was the largest of the two, but the smaller was the most fun, since I was holding the rod & reel with the drag set on the lightest setting. I felt it hit and knew it was something a little different than the normal catch. After about 100 yards, I started getting a little drag on it and that it didn’t like, the acrobatic show was on! What a thrill watching that sail jump and the speed exhibited! I gently worked the fish in and the inexperienced mate and captain boated the fish, even after me asking them not to. The first one caught was simply winched in out of a fighting chair, but the captain and mate were professional in handling the fish as it was photographed along side the boat, tagged and resucitated. It was joy seeing those two fish safely swim away! Thanks for a great article that refreshed the memory of an old man.

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    Vule

    Jun 21, 2021

    Hi Jim,

    This story really painted a nice picture for us, so thanks for sharing! It sounds like you had a lot of fun reeling in these feisty fish – there’s nothing quite like the thrill you can experience in these moments. We’re glad you got to relive some of your fishing experiences through reading our blog!

    Tight Lines,

    Vule

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John paul

Mar 17, 2021

I’ve always doubted the 80 mph claim for black marlin.

blue marlin make much faster runs according to dozens of fishermen I’ve heard from, and blacks are more known for their bullish stamina than their swiftness, and yet blues clock in at only 50 mph.

Then again maybe a beast of a black marlin was timed, or the blue marlin tested was unusually slow, Idk.

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    Sean

    Mar 19, 2021

    Hi John,

    Thanks for sharing.

    You’re right, it’s hard to determine how fast a certain species is based on just a few samples.

    Things get even more complicated because there are multiple ways in which you can time a fish. One of the newer, and apparently more accurate ways to measure fish speed seems to be using high-frequency accelerometry and high-speed video.

    According to one such study, the speed of a Sailfish is not 30 m/s (68 mph), but 7 m/s.

    A different study determined that Sailfish can reach speeds of 8.3 m/s by looking at muscle contraction time and stride length.

    There are also studies that monitor fish movements using popup satellite archival tags, or PSATs, and those are also revealing slower speeds than originally measured.

    So to be fair, the mythical 68 mph and 80 mph are probably exaggerations.

    Thanks for reading, and have a great day!

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    John

    Mar 31, 2021

    The stride length tail beat study will strike many serious anglers as ridiculous, as it claims the mahi mahi is a poor swimmer, the fish whose name literally means very strong and is known for it’s lightning speed.

    I’ve personally seen them caught trolling at 20+ knots for wahoo, much, much faster than their claimed max speed.

    I wonder why the scientists don’t just hook one of these fish on a light drag and use a precise line counter reel and high speed camera to see how quickly the fish is moving in quick bursts. Then simply subtract the current and possible boat speed, and you know how fast it is.

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    Sean

    Apr 1, 2021

    Hi John,

    Thanks for sharing.

    That’s a good point. Anyone who’s hooked a Mahi knows the speed and pulling power that they can produce.

    It’s really tough to compare species’ speeds when many of them are timed in different environments and with different techniques. For example, some sources say that Mahi are poor swimmers like you said, while others (like Greenpeace, for example) say that they can reach speeds of 50 knots.

    Timing fish with a line counter like you described does sound like a good way to measure speed. Combined with high-speed video, they would likely give a much more precise result. The only thing is that these measuring techniques would need to be standardized across the board so that we can accurately compare fish speeds.

    Thanks again for sharing, and have a great day!

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    andy

    Sep 12, 2023

    The blue marlin staples are all fast, including tuna and wahoo, and they often have high-speed video with teleportation, the black marlin performed well in the GPS test, at least 50mph, and I imagine the blue marlin is faster

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Mateo aka the fishing lover

Nov 10, 2020

I wish to catch one of these monsters

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    Sean

    Nov 13, 2020

    Hi Mateo,

    We know what you mean – catching one of these Billfish should be on every angler’s bucket list.

    These fish take some skill to reel in, so make sure you find yourself a good captain before heading out.

    Tight lines!

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    Will

    Nov 18, 2020

    I real in one and i’m a kid. It was so esey. It was a 7 footer

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    Sean

    Nov 19, 2020

    Hi Will,

    Congrats, that’s no small achievement!

    Most anglers would trade their entire tackle box for a catch like that.

    Where did you catch your Billfish?

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Ellie Chang

Oct 22, 2020

I loved your article and also told my dad who is an expert at fishing. He said it was very cool, and also wants to try to catch one. He says he hopes it is not as hard as catching a marlin or a yellowfin tuna the size of him lol!

Thank you for this article!

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    Albert

    Oct 22, 2020

    Hi Ellie,

    Thanks for getting in touch. I’m glad you and your dad enjoyed it!

    Sailfish are normally a little easier to catch as Marlin, but they’ll give a Yellowfin a run for its money. Great fun, that’s for sure.

    All the best!

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Julie Ann

Jul 8, 2020

Thanks for the informative article! I am doing a “fishing” theme at the prison I work and I needed some large scale fish to cover walls (and have impact!) and now I am going to make a life sized sailfish and a blue Marlin, one for each end and some smaller versions for over the windows. The trivia is great, I can use that to get the guys more involved.

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    Albert

    Jul 9, 2020

    Hi Julie,

    That’s awesome!

    I’m glad you enjoyed the article and that it can hopefully inspire some people to get creative.

    All the best!

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marlinwhaler

Jun 15, 2020

hi
great info ,i would like to know about their age
iv’e been working on a commercial long line tuna boat out of australia’s east coast in the early 2000 ,caught a few beautiful striped marlins ,best one was maybe 3 meters a bit more than 100 kg .gave us a 4 hour fight my hands were like concrete but it was worth it,glowing blue purple stripes in the ocean blackness fade out

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    Sean

    Jun 16, 2020

    Hi there,

    Thanks for sharing.

    Watching a Striped Marlin light up is a thing to behold, that must’ve been a thrilling experience.

    As for the age of Sailfish and Marlin, things are pretty interesting.

    While a Sailfish can live for 13-15 years, their average life span is usually around 4-5 years.

    Striped Marlin, on the other hand, are more long-lived creatures, and can reach the age of 20. Then there’s the Blue Marlin. These fish are old enough to mate as early as 2-4, but there are major differences between males and females. Males can live for around 18 years, while females can reach almost 30!

    The more we learn about these fish, the more we see how fascinating they really are.

    Have a great day!

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    Rob Povlitz

    Aug 11, 2020

    Sean, Thank’s for Your extensive knowledge on Billfish. I have read several articles and Yours are very thorough. I have never caught a billfish but have caught Mahi and Silver King Salmon. These fish are truly beautiful and Magestic. I would not want to risk their life by trying to boat one. Thanks for Your knowledge it is appreciated!!

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    Sean

    Aug 11, 2020

    Thank you Rob,

    I’m glad you found the articles useful.

    Mahi and King Salmon are incredible fish in their own right. I haven’t actually heard people call Chinooks Silver Kings, but Silver Salmon is a common name for Coho. If you’d like to read more about the various types of Salmon, check out this article.

    Thanks for reading the blog, Rob. Have a great day!

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    Andrew McGregor

    Feb 12, 2021

    The sailfish kind of reminds me of trout, in that many people believe that there are a few types of trout, when in reality there are only lake trout and brook trout, the latter includes so-called speckled, and rainbow

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    Albert

    Feb 12, 2021

    Hi Andrew,

    Thanks for getting in touch. It’s true that there’s some debate over whether Pacific and Atlantic Sailfish are actually different sub-species or not. However, I’m going to have to disagree about the Trout.

    Lake Trout and Brook Trout are both actually species of Char, a cold-water group in the Trout and Salmon family. Rainbow Trout are from a completely different genus and are much more closely-related to King Salmon than Brook Trout. On top of that, you’ve got Brown Trout, belonging to yet another genus of Trouts and Salmons in Europe, where they were imported from.

    Confusing? Absolutely! In fact, we wrote an entire article on the many Trouts of North America, and what “Trout” even means, anyway. Check it out if you’re interested.

    All the best!

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Ultimboy

May 30, 2020

Nice Article!!
Here in the Philippine, SAILFISH & MARLINS they are always available in our market. Esp. Here in gensan Mindanao

Sailfish/Liplipan- is yummier when grilling

Blue Marlin/ Malasugi- is good for Tinola/Fish Soup and sushi/Kinilaw

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    Sean

    Jun 1, 2020

    Hi there,

    Thanks for sharing.

    Sailfish do have a distinctive, meaty texture compared to other fish. Most anglers go after them for the sport, but as you pointed out, they are considered a delicacy in certain parts of the world.

    When it comes to Blue Marlin, however, these fish are a catch-and-release species almost anywhere on the planet. As top-tier predators, they are very valuable for the marine ecosystems they inhabit. Sadly, because of overfishing, Blue Marlin numbers are in decline. This is why most fisheries will advise that you release these fish and avoid eating them if you can.

    Avoiding eating Blue Marlin isn’t just good for the planet, mind you. Their meat is high in mercury, so by not eating them, you’ll be doing yourself a favor, too!

    Thanks for reading.

    Have a great day!

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Robert Bradley

May 22, 2020

Excellent article! It answered several questions for me. I’m looking forward to catching my first billfish. Hopefully soon!

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    Sean

    May 22, 2020

    Hi Robert,

    Thanks for reading, I’m glad you found the article useful.

    Hope you’ll catch a big one! Tight lines!

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Tony

May 20, 2020

I was never much of a fisherman growing up but when I went to Mexico on my honeymoon I was told not to pass up the opportunity to go marlin fishing. I booked a chartered boat ride to do just that while we were vacationing in Mazatlan around 1990. I’ve never sweated so much in my life. I don’t recall how long it took to reel it in and We never got an official weight on the “Sailfish” but it was a good hour at least. Great fun and of course the staff lent me a hand especially getting him in the boat. Our boat caught two that day and I was lucky enough to get a picture of them to hang on my wall. What a great experience!

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    Sean

    May 20, 2020

    Hi Tony,

    Thanks for sharing!

    I bet that the feeling was something else! Few things can compare to catching your first billfish.

    Hope you’ll catch a lot more.

    Tight lines!

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Tracy A Blackburn

Apr 4, 2020

Thank you. You made it very clear to me the difference! Amazing fish❤

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    Sean

    Apr 6, 2020

    Hey, Tracy,

    Thanks for reading, I’m glad to hear that the article was useful.

    Have a great day!

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John Graves

Feb 4, 2020

I don’t fish anymore but I found your article very informative. What I don’t enjoy seeing is how a hooked fish that can’t defend itself are savaged by giant sharks after hours of fighting. I don’t believe great whites or any other mess with the big marlin at their strongest or else they wouldn’t have gotten that big. Moreover sharks don’t tangle with a grander until it is spent despite having a hook and line impeding it’s defense. What I would see tacked on to fisheries a technology of weighing a fish on the line while it is fighting also a underwater video drone hooked onto the line to film how the sharks react with the billfish. Maybe release it while it can defend itself and see how big it can get. If somebody wants a trophy that’s the risk of fishing in shark infested waters. You might send this suggestion to whoever can develop the technology. Just like whale watching you can develop other underfunded industries. Thanks again.

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    Sean

    Feb 5, 2020

    Hi John,

    Thanks for sharing.

    That’s a completely valid point. Marlin are powerful fish, and definitely not to be trifled with. Over the years, many anglers have reported seeing Sharks with Marlin bills lodged in their bodies. That’s actually the reason why some Sharks have developed an extra protective eyelid, or why others roll their eyes into the back of their heads when attacking prey.

    The technology to implement a monitoring system is definitely there. For example, new Mako Shark fishing regulations will require all commercial (and possibly even recreational) fishing vessels to have electronic monitoring systems onboard. They don’t employ the use of underwater drones, however, because current underwater drones are too heavy to be attached to a fishing line.

    When it comes to suggesting something like this as a rule for all anglers to obey, regulators have a standardized procedure for doing so. What they do is propose a solution, and then allow a period for suggestions and amendments. That’s how the Mako Shark electronic monitoring proposal came about.

    But I’m guessing that what you’re suggesting has more to do with research than with actual fishing regulations. At this moment, it seems like we’re still at least several years removed from such a system. When the technology does become available, it will no doubt be of great help to marine conservationists.

    Thanks again for sharing, John.

    All the best!

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Srini

Dec 24, 2019

Thanks a lot for this post. I am not a fishing guy but fascinated by these creatures. I knew they were similar but wasn’t sure and this article was awesome. Thanks for the pics. Know i can differentiate them:)

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    Sean

    Dec 24, 2019

    Hey Srini,

    Thanks for reading.

    Sailfish and Marlin are awesome, aren’t they? I glad to hear that you liked the article.

    Have a good one!

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    Tim

    Mar 26, 2020

    Same!

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Christina Duong

Jun 19, 2019

We LOVE your article!!! Thank you so much for the informative article! Can we go fishing with you one day??? Just kidding, not really. Thank you!!!

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    Sean

    Jun 19, 2019

    Hi Christina,

    Thanks for reading!

    I’m glad you liked the article. Hey, we don’t mind, as long as you have a great time.

    Tight lines!

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