About Scomberoides lysan (Forsskål, 1775)
The doublespotted queenfish, with the scientific name Scomberoides lysan (Forsskål, 1775), is a tropical game fish belonging to the jack family Carangidae. It is associated with reef habitats and has a wide distribution across the Indian and Pacific Oceans. Other common names for this species include giant dart, large-mouthed leatherskin, leatherskin, queenfish, skinny fish, skinnyfish, St. Peter's leatherskin, white fish, and whitefish; it is called イケカツオ (生鰹, Ikekatsuo) in Japanese. Doublespotted queenfish can reach a maximum total length of 110 cm and a maximum mass of 11.0 kg (24.3 lb). Their base body color is primarily silver, with dark coloration on the dorsal and caudal fins, and a row of dark spots along each side of the lateral line. Their scales are needle-like and embedded in tough skin. Breast scales are sharply lanceolate, and scales are embedded in the middle of the body below the lateral line, but this species lacks the scutes found in some other jacks. This species' range extends eastward from the Red Sea and eastern Africa to Hawaii, the Marquesas, and the Tuamotu Islands. It can be found as far north as southern Japan, and as far south as New South Wales and Rapa Iti. It lives in relatively clear waters from the surface down to around 100 m (330 ft). Juveniles live in shallow nearshore waters, including brackish areas. Adults are associated with reefs. This species is primarily solitary. Juveniles feed on the scales of schooling fish. Similar to most jacks, adults hunt fish and crustaceans for prey. This species is venomous; its venom is located on the spines of its dorsal and anal fins.
