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Common Dolphinfish

Famed for their electric greenish-blue scales and dazzling golden sides, common dolphinfish (also known as mahi-mahi) are fast-growing predators that light up the ocean surface.

 

Common dolphinfish are found in tropical and subtropical waters in the Atlantic, Indian, Pacific Oceans, the Caribbean and the Mediterranean. These brightly colored swimmers prefer the ocean surface, where they frequently gather around floating objects, including patches of brown algae called sargassum. They are easily recognized by their long, single dorsal fin that extends from above the eye almost to the tail, as well as their vibrant coloration. Adult males are distinguished by a very square head, while females have a more rounded profile. Males are also larger than females, capable of growing up to 2 meters (6.56 feet) long and weighing over 30 kilograms ( pounds).

While juveniles tend to travel in schools, older dolphinfish are usually found alone. These fish are highly migratory, and individual dolphinfish have been found to move in a circular pattern over 1,000 kilometers (621 miles) along the Atlantic coasts of North, Central, and South America. Dolphinfish are predators that feed during the day, using their speed to hunt small pelagic fish, juvenile tuna, jacks, and invertebrates. Due to their fast-swimming speeds and oxygen needs, they must swim continuously to pump water through their gills. They are also incredibly productive breeders and can reproduce at just four to five. They have a short life cycle, typically living only up to 2 years.

 

 

The common dolphinfish is highly targeted by both commercial and recreational fishers. Despite this, its overall population has remained relatively stable, likely due to its high productivity and wide distribution. Regulations are in place to protect the dolphinfish, such as annual catch limits, commercial trip limits, and recreational bag limits. There is no indication that this species is undergoing signification population declines and it is currently considered a species of Least Concern by the IUCN Red List.

 

 

Fisheries management tools such as catch limits help ensure that fisheries like the common dolphinfish remain balanced and sustainable. By campaigning for responsible fishing around the world, Oceana helps allow species like the common dolphinfish remain healthy and other, more threatened species to recover to their former abundance. Learn more about Oceana’s work to stop overfishing here.

 

 

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IUCN Red List 

 

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