The Difference Between Swordfish and Sailfish: Look, Catch, Taste, and More


Here in South Florida, we have some of the best Sailfish fishing in the world. But we also have excellent Marlin, and if you’re up for it, swordfish. But if you’ve never gone out for any kind of billfish before, then you might not be familiar with the differences between swordfish and sailfish. While they may share some similarities, such as their streamlined bodies and prominent bills, there are several key differences between these majestic fish. Let’s explore the variations in their physical characteristics, habitats, behaviors, and culinary uses.

catching a billfish off the Atlantic Coast of Florida

Physical Characteristics:

Distinguishing between a swordfish and a sailfish can be done by examining these physical characteristics:

  • Bill: The bill is a prominent feature in both species, but there are differences in shape and size. Swordfish have a long, flat bill that resembles a sword, giving them their name. It is relatively broad and straight, with a sharp pointed tip. Sailfish, on the other hand, have a longer bill compared to swordfish, but it is slender and curved, resembling a sail. The sail-like dorsal fin of the sailfish sets it apart from other billfish species.
  • Size: Swordfish are generally larger than sailfish. Swordfish can grow up to 11 feet (3.4 meters) in length and can weigh up to 1,400 pounds (635 kilograms). Sailfish, although still impressive, are slightly smaller, with average lengths ranging from 6 to 10 feet (1.8 to 3 meters) and weights between 120 to 220 pounds (55 to 100 kilograms).
  • Dorsal Fin: The dorsal fin of sailfish is a distinct feature that sets it apart from swordfish. When excited or threatened, sailfish can raise their dorsal fin, which extends to a considerable height and resembles a sail or flag. Swordfish do not possess this prominent dorsal fin.
  • Coloration: Both swordfish and sailfish exhibit unique color patterns. Swordfish have a dark, metallic blue or brownish-black color on their upper body, fading to a lighter shade on their lower body. Sailfish, on the other hand, have a blue-gray or dark-blue upper body, often with a vibrant mix of colors, including iridescent shades of blue and silver. Sailfish also have vertical stripes along their body.
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Keep in mind that these characteristics may vary slightly depending on the individual fish and its age.

Habitat, Hunting Grounds, and Migration:


  • Habitat: Sailfish prefer warm tropical and subtropical waters near the surface. They are commonly found in the Atlantic Ocean, Indo-Pacific region, and the Gulf of Mexico.
  • Hunting Grounds: Sailfish are known for their acrobatic hunting style, often found in offshore waters near reefs, shoals, and areas with abundant baitfish. They tend to concentrate where prey is plentiful.
  • Migration: Sailfish are highly migratory fish. They undertake seasonal migrations, following warm currents and food sources. In the Atlantic, they migrate northward during warmer months and move southward during cooler periods.


  • Habitat: Swordfish inhabit deeper offshore waters, ranging from temperate to tropical regions across the globe. They are commonly found in the Atlantic, Indian, and Pacific Oceans.
  • Hunting Grounds: Swordfish are capable of diving to great depths, often spending daylight hours in deeper waters and rising to shallower depths at night to feed. They are known to target various prey, including squid, small fish, and crustaceans.
  • Migration: Swordfish are also migratory, although their movements can be more localized compared to sailfish. They may undertake vertical migrations, moving to deeper or shallower waters depending on food availability and temperature. Swordfish populations in different regions may exhibit varying migration patterns.

Both sailfish and swordfish are highly mobile species, constantly seeking optimal feeding conditions and suitable water temperatures. Their migrations can be influenced by factors such as food availability, reproduction, and changes in water temperatures.

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It’s important to note that the specific habitats, hunting grounds, and migration patterns can vary based on regional populations, oceanic conditions, and seasonal factors. Conservation measures are in place to protect these magnificent fish species and ensure their continued presence in their respective habitats.

Behaviors and Feeding:

Swordfish and sailfish have similar diets, but there are some differences in their preferred prey items due to variations in their habitats and feeding behaviors. Both species are carnivorous and feed primarily on other fish.

  • Swordfish are opportunistic predators known for their ability to dive to great depths in search of prey. They have a varied diet that includes squid, small fish (such as mackerel, herring, and sardines), crustaceans (such as shrimp and crabs), and occasionally cephalopods like octopus. Swordfish are powerful hunters and have been observed using their sharp bills to slash and stun their prey.
  • Sailfish also feed on a range of fish species, but they typically target smaller pelagic fish found closer to the ocean’s surface. Their diet commonly consists of baitfish like herring, mackerel, anchovies, and flying fish.While both swordfish and sailfish feed on baitfish, swordfish have a more varied diet that includes a higher proportion of squid and crustaceans, while sailfish primarily focus on small pelagic fish. These differences in prey selection reflect their distinct hunting strategies and ecological niches within their respective habitats.

Culinary Uses and Flavor:

The taste preference between sailfish and swordfish is subjective and can vary depending on personal preferences. Both sailfish and swordfish have distinct flavor profiles.

  • Swordfish is known for its meaty texture and mild, slightly sweet flavor. It has a dense and firm consistency, similar to that of a steak. The flavor of swordfish is often described as being meat-like and is suitable for grilling, broiling, baking, or blackening. It can be enjoyed with a variety of seasonings and sauces to enhance its taste.
  • Sailfish, on the other hand, has a more delicate flavor but still has a slightly sweet and mild taste. The meat of sailfish tends to be slightly softer than swordfish. Sailfish is often used in preparations such as ceviche, sushi, or smoked dishes, where its subtle flavor can be enjoyed.
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Ultimately, whether sailfish tastes better than swordfish or not is a matter of personal preference. Some individuals may prefer the meaty and mild flavor of swordfish, while others may enjoy the delicate and slightly sweet taste of sailfish.


So, while both swordfish and sailfish share some characteristics, such as their streamlined bodies and bills, there are notable differences between the two. Swordfish are larger, inhabit deeper waters, and have a distinct sword-like bill, while sailfish have the prominent dorsal fin, are smaller in size, and prefer warmer surface waters. Understanding these distinctions can enhance your appreciation for these remarkable fish and their unique qualities, but when you head out on the water aiming for either one—you’re in for a treat…that is, if you get one.

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Ethan Smith is a seasoned marine veteran, professional blogger, witty and edgy writer, and an avid hunter. He spent a great deal of his childhood years around the Apache-Sitgreaves National Forest in Arizona. Watching active hunters practise their craft initiated him into the world of hunting and rubrics of outdoor life. He also honed his writing skills by sharing his outdoor experiences with fellow schoolmates through their high school’s magazine. Further along the way, the US Marine Corps got wind of his excellent combination of skills and sought to put them into good use by employing him as a combat correspondent. He now shares his income from this prestigious job with his wife and one kid. Read more >>