Pompano Dorado, Coryphaena equiselis
Pompano Dorado, Coryphaena equiselis, Juvenile. Fish caught from coastal waters within Bahia Solano, Colombia, June 2019. Length: 38 cm (15 inches). Catch courtesy of Earl Roberts, Mexicali, Baja California. Photograph and identification courtesy of Chris Wheaton, Fullerton, California. Note: the body depth is only 23.2% of standard length but the dorsal fin ray counts are correct.
Pompano Dorado, Coryphaena equiselis. Fish provided by the commercial fishermen of the greater Los Cabos area, Baja California Sur, November 2010. Length: 40 cm (16 inches).
The Pompano Dorado, Coryphaena equiselis, is a member of the Dolphinfish or Coryphaenidae Family, that is known scientifically as the Pompano Dolphinfish and in Mexico as dorado enano. Globally, there are two species in the genus Coryphaena, both are found in Mexican waters of the Atlantic and the Pacific Oceans.
The Pompano Dorado has an elongated compressed body with a maximum depth that is greater than 25% of standard length. They are a brilliant metallic blue-green dorsally transitioning to golden yellow ventrally with scattered iridescent blue green spots covering their head and body. These striking colors quickly fade to gray with green reflections upon death. Their anal, caudal, and pelvic fins are yellow and their dorsal fin is blue-green. The caudal fin in juveniles has white margins. Adults are sexually dimorphic with males having a bony crest on their forehead and a near vertical front snout profile. Females have rounded heads. They have large mouths with numerous small teeth in bands on their jaws and a patch of small oval teeth on their tongue. Their anal fin has a long base and 24 to 28 rays with a concave anterior outer edge extending nearly to the caudal fin; and, their dorsal fin has a long base with 48 to 55 rays extending from the nape to almost the caudal fin. Their anal and dorsal fins have no spines or isolated finlets. Their caudal fin is deeply forked; their pectoral fins are less than 50% of head length; and, their pelvic fins are short. Their lateral line is sharply arched over the pectoral fins. They are covered with small smooth scales.
The Pompano Dorado is an oceanic pelagic species found predominantly on the surface but also at depths up to 50 m (165 feet). They reach a maximum of 1.27 m (4 feet 2 inches) in length. As of January 1, 2023, the International Game Fish Association world record stood at 5.13 kg (11 lbs 5 ozs) with the fish caught in coastal waters off North Carolina in June 2022. They prefer water temperatures between 24oC (75oF) and 30oC (86oF). They are voracious predators feeding on flyingfish, herrings, jacks, mackerels, mullets, small tuna, and squid. In turn they are preyed upon by various marlins, sailfish, sharks, swordfish, tuna, and sea birds. Reproduction is oviparous and occurs year-round in open waters. They have a lifespan of up to 4 years. The Pompano Dorado is a rare and poorly studied with very limited information available about their lifestyle and behavioral patterns including specific details on age, growth, longevity, movement patterns, diet, habitat use, and reproduction.
The Pompano Dorado is a resident of all Mexican waters of the Atlantic Ocean and the Pacific Ocean with the exception that they are absent from along the northwest coast of Baja and the northern third of the Sea of Cortez.
The Pompano Dorado is fairly similar to, and is often confused with, the Dorado, Coryphaena hippurus (body depth less than 25% of standard length; pectoral fins greater than half the head length).
The Pompano Dorado is easy to identify as a Dorado however I believe that the majority that are caught are believed to be juvenile and small female Dorado, Coryphaena hippurus. The Dorado has a body depth less than 25% of standard length, long pectoral fins that are greater than half the head length and the tooth patch on the tongue that is small and round.
From a conservation perspective the Pompano Dorado is currently considered to be of Least Concern with stable widely, distributed populations. They are seldom caught by recreational anglers in Mexican waters. They are more common and an important food fish in countries of northern South America. If sold commercially they are most likely known by their Hawaiian name, mahi-mahi. In Mexico they are covered by new commercial regulations with area closures, a ban on the use of purse seines, and the recent implementation of a two fish per day limit for recreational anglers.