The wahoo is a (Acanthocybium solanderi) swift-moving, powerful, predaceous game fish found worldwide, especially in the tropics. A slim, streamlined fish, it has sharp-toothed, beak-like jaws and a tapered body ending in a crescent-shaped tail. Gray-blue above and paler below, it is marked with a series of vertical bars. Like the related tunas, it has a row of small finlets behind the dorsal and rear fins.
The mouth is large, and both the upper and lower jaws have a somewhat sharper appearance than those of King or Spanish Mackerel. Specimens have been recorded at up to 2.5 meters (8 ft) in length, and weighing up to 83 kilograms (180 lb). Growth can be rapid. One specimen tagged at 11 pounds grew to 33 pounds in one year. It can swim up to 75 kilometers (47 miles) per hour.
They tend to be solitary or occur in loose-knit groups of two or three fish, rather than in schools. Their diet consists essentially of other fish and squid.
The flesh is white and regarded as very good in quality. With a flavor often compared to that of albacore, it's moderate- to high-fat flesh is fine, white (with a little red) and slightly sweet. In fact, Hawaiians call this fish ono, which means "sweet" or "delicious". The fish is also known as Jack mackerel, and Peto.
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