The striped beakfish (''Oplegnathus fasciatus'') is a marine

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or hor ...

, a knifejaw from the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Oplegnathidae ''Oplegnathus'' is currently the sole recognized genus in the knifejaw family (Oplegnathidae) of marine perciform fishes. The largest, the Cape knifejaw, can reach a maximum length around 90 cm (35 in). Knifejaws have teeth fused into ...

. It is native to the northwestern

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

, though a smattering of records exist from other localities in the eastern Pacific such as

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

and

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

. Recently introduced – probably via ballast water – in the central Mediterranean, it is found very rarely from

Malta Malta ( , , ), officially the Republic of Malta ( mt, Repubblika ta' Malta ), is an island country in the Mediterranean Sea. It consists of an archipelago, between Italy and Libya, and is often considered a part of Southern Europe. It lies ...

to the northern

Adriatic The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkans, Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Sea) ...

. It is an inhabitant of rocky

reefs A reef is a ridge or shoal of rock, coral or similar relatively stable material, lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic processes— deposition of sand, wave erosion planing down rock out ...

and occurs at depths from . Juvenile members of this species can be found with patches of drifting seaweed. This species can reach a total length of , with the greatest recorded weight for this species of . The color pattern consists of light and dark vertical bars from which it derives its name. The species feeds mainly on hard-shelled

invertebrates Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...

such as

crustaceans Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...

and

molluscs Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant taxon, extant species of molluscs are recognized. The number of fossil sp ...

. It is a commercially important species and is also

farmed Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people t ...

. It is also sought after as a

game fish Game fish, sport fish or quarry refer to popular fish pursued by recreational anglers, and can be freshwater or saltwater fish. Game fish can be eaten after being caught, or released after capture. Some game fish are also targeted commerciall ...

. Five striped beakfish, of which one remains in captivity, endured more than 2 years in the partially submerged hull of the Japanese boat ''Sai-shou-maru''.

In media

* The striped beakfish appears in the ''

Animal Crossing is a social simulation video game series developed and published by Nintendo. The series was conceptualized and created by Katsuya Eguchi and Hisashi Nogami. In ''Animal Crossing'', the player character is a human who lives in a village inhabi ...

'' franchise, as "barred knifejaw". * It is mentioned in the 2003 South Korean movie '' ''Oldboy''''. * In the 2012 Korean movie '' Swimming to Sea'', a striped beakfish is a character voiced by Hyeon Kyeong-soo.

References

Oplegnathidae Fish of Hawaii Fish described in 1844 {{Perciformes-stub