The doublespotted queenfish (''Scomberoides lysan'') is a tropical game fish in family Carangidae (jacks). It is associated with reefs and ranges widely throughout the Indian and Pacific Oceans. Other common names for this fish are giant dart, large-mouthed leatherskin, leatherskin, queenfish, skinny fish, skinnyfish, St. Peter's leatherskin, white fish or whitefish. イケカツオ（生鰹, Ikekatsuo）is in Japanese. Doublespotted queenfish are known to reach up to 110 cm total length and mass up to 11.0 kg (24 lb.). They are primarily silver in color, with dark coloration on the dorsal and caudal fins and a row of dark spots on either side of the

lateral line The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial ...

. Scales needle-like and embedded in tough skin; breast scales sharply lanceolate and embedded on middle of body below lateral line but lack the scutes of some other jacks. This species ranges eastward from the Red Sea and eastern Africa to Hawaii, the Marquesas, and the Tuamotu Islands. It is found as far north as southern

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

and south to New South Wales and Rapa Iti. It occupies relatively clear waters from the surface to about 100 m (330 ft.). Juveniles inhabit shallow water near the shore, including brackish areas. Adults are associated with reefs. They are primarily solitary. Juveniles feed on the scales of

schooling fish In biology, any group of fish that stay together for social reasons are shoaling, and if the group is swimming in the same direction in a coordinated manner, they are schooling. In common usage, the terms are sometimes used rather loosely. Ab ...

. Like most jacks, adults prey on fish and crustaceans. This species is venomous with the venom found on the spines of the dorsal and

anal fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as se ...

s. Abstract

Relationship with humans

Doublespotted queenfish are pursued as game fish and are sometimes used as bait as well. The IGFA all tackle world record for the species stands at 3.29 kg (7 lb 4oz) caught off of

Benguerra Island Benguerra Island in Mozambique is the second largest island in the Bazaruto Archipelago, which broke away from the mainland thousands of years ago. The island is approximately 55 square kilometers (11km long x 5.5 km wide), and lies 14km offshor ...

, Mozambique in 2008.

References

{{Taxonbar, from=Q1816318 Scomberoides Fish of Hawaii Taxa named by Peter Forsskål Fish described in 1775