Cymbacephalus
Cymbacephalus is a genus of marine fish in the family Carangidae, commonly known as jacks or horse mackerel. The genus consists of only one species, Cymbacephalus beauforti, which is endemic to the western Pacific Ocean.
Common Names
Cymbacephalus beauforti is commonly known as the boat-headed jack or beaufort's jack.
Characteristics
The boat-headed jack is a large, distinctive fish, reaching a maximum length of around 1.5 meters. It is easily recognizable by its flattened, boat-shaped head, which gives it its common name. The body is compressed and deep, with a large mouth and strong teeth. The dorsal fin is composed of two parts: a short, spiny anterior part and a longer, soft-rayed posterior part. The anal fin is also composed of two parts, with a long, soft-rayed posterior portion. The caudal fin is forked and powerful.
The color of Cymbacephalus beauforti varies depending on age and location. Juveniles are typically silver or bronze, while adults can be brown, gray, or black. The fish also has dark blotches or stripes on its body.
Environment
Cymbacephalus beauforti inhabits coral reefs and rocky shores in the western Pacific Ocean. It is found in relatively shallow waters, from the surface down to depths of around 100 meters. The species is known to be a solitary fish, but sometimes forms small groups. It is a carnivore, feeding mainly on smaller fish, crustaceans, and squid.
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