The Mahimahi (in Hawaiian), Coryphaena hippurus, also known as common dolphin-fish, dorado maverikos, or lampuki (in Maltese) are surface-dwelling ray-finned fish found in off-shore tropical and subtropical waters worldwide. They are one of only two members of the Coryphaenidae family, the other being the Pompano dolphinfish. It is very common to see the word Mahimahi spelled as two words (mahi mahi) or as a single word separated by a dash (mahi-mahi). Each of these variations is wrong. The true Hawaiian spelling of the word is as a single word. the correct spelling is Mahimahi and it is pronounced "ma-e-ma-e."

Mahimahi have a lifespan of 4 to 5 years. Catches average 7 to 13 kg (15 to 28 pounds). They seldom exceed 15 kg (33 pounds), and any Mahimahi over 18 kg (39 pounds) is exceptional. Mahimahi have compressed bodies and long dorsal fins extending almost the entire length of their bodies. Their anal fins are sharply concave. They are distinguished by dazzling colors: golden on the sides, bright blues and greens on the sides and back. Mature males also have prominent foreheads protruding well above the body proper. Females have a rounded head. The males and female have similar shaped bodies except for their heads. Females are usually smaller than the males.