Common Dolphinfish (Coryphaena hippurus) — identification, habitat & look-alikes

Common Dolphinfish is a colorful fish that gathers near floating objects in warm offshore waters. Its blue, green, and gold colors can fade soon after it leaves the water. In the United States, it is often called mahi mahi.

Appearance

Appearance: A long runs almost from the head to the tail. Large males develop a steep, squared forehead, while females have a rounder profile.

Look-alikes

Pompano dolphinfishCoryphaena equiselis

An adult pompano dolphinfish (Coryphaena equiselis) has a deeper body, while Common Dolphinfish looks more slender. Small or female fish can still be difficult to separate from a side photo.

Why they get mixed upBoth have bright colors, a long dorsal fin, and a deeply forked tail.

Where it lives

Typical habitats: Offshore surface waters
Floating seaweed and debris
Range: In U.S. waters, it occurs along the Atlantic and Gulf coasts from Massachusetts to Texas and in the Pacific, especially around Hawaii.
Preferred conditions: It favors warm ocean water and often gathers near floating objects.

Behavior

Diet: It hunts smaller fish and near the surface during the day.
Social life: Young fish often swim in groups; large adults may travel alone or in pairs.

Life cycle

Breeding season: In the Florida Current, young fish have been found year round, with the highest numbers in summer.

Conservation

IUCN Red List: LCLeast ConcernLow risk of extinction

Culture and stories

Culture and stories: Mahi mahi is a popular sport fish off the U.S. Atlantic coast.
It is also sold as seafood in the United States.

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