''Caesio teres'', the yellow and blueback fusilier, beautiful fusilier, blue and gold fusilier or yellow-tail fusilier, is a species of

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

pelagic The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth (as illustrated on the right). The word ''pelagic'' is derived . The pelagic zone can be thought of as an imaginary cylinder or w ...

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 h ...

belonging to the

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

Caesionidae Caesionidae, the fusiliers, are a family of marine ray-finned fishes in the order Perciformes. The family includes about 23 species. They are related to the snappers, but adapted for feeding on plankton, rather than on larger prey. They are foun ...

. It occurs in the Indian and Western Pacific Oceans.

Taxonomy

''Caesio teres'' was first formally described in 1906 by the American

ichthyologist Ichthyology is the branch of zoology devoted to the study of fish, including bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 33,400 species of fish had been described as of October ...

Alvin Seale Alvin Seale (July 8, 1871 – July 28, 1958) was a naturalist known for his aquarium design and as an ichthyologist. Early life Alvin Seale was born on July 8, 1871, in Fairmount, Indiana, to a family of Quakers. In 1892, he attended Stanford Un ...

with the

type locality Type locality may refer to: * Type locality (biology) * Type locality (geology) See also * Local (disambiguation) * Locality (disambiguation) {{disambiguation ...

given as

Shortland Island Shortland Island (once known as ''Alu'') is the largest island of the Shortland Islands archipelago, in the Western Province of the Solomon Islands, at . The original name was a Melanesian word, while the current name was given to the island by ...

in the Solomon Islands. This species has been placed in the

subgenus In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed betw ...

''Flavicaesio''. The specific name ''teres'' means “cylindrical”, a reference to the

cylindrical A cylinder (from ) has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes. In elementary geometry, it is considered a prism with a circle as its base. A cylinder may also be defined as an in ...

cross-section Cross section may refer to: * Cross section (geometry) ** Cross-sectional views in architecture & engineering 3D *Cross section (geology) * Cross section (electronics) * Radar cross section, measure of detectability * Cross section (physics) **Abs ...

of the body compared to '' C. lunaris''.

Description

''Caesio teres'' has a moderately deep, fusiform and laterally compressed body. The dorsal fin has 10 spines and 14-16, typically 15, soft rays while the anal fin contains 3 spines and 12-13 soft rays. The pectoral fins contain 20-22, typically 21 rays. This species attains a maximum total length of , although is more typical. The upper back and the rear part of the dorsal fin are bright yellow with the remainder of the body being bright blue on the upper body and white ventrally. The pectoral fin is white with a black upper base, the pelvic and anal fins are white.

Distribution and habitat

''Caesio teres'' has a wide tropical

Indo-West Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the ...

distribution. It is found from the East African coast between Somalia and South Africa east into the Pacific as far as the

Line Line most often refers to: * Line (geometry), object with zero thickness and curvature that stretches to infinity * Telephone line, a single-user circuit on a telephone communication system Line, lines, The Line, or LINE may also refer to: Art ...

and

Tuamotu Islands The Tuamotu Archipelago or the Tuamotu Islands (french: Îles Tuamotu, officially ) are a French Polynesian chain of just under 80 islands and atolls in the southern Pacific Ocean. They constitute the largest chain of atolls in the world, extendin ...

, north to southern Japan south to the

Great Barrier Reef The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over over an area of approximately . The reef is located in the Coral Sea, off the coast of Queensland, ...

. It is absent from the Red Sea and the Persian Gulf. In Australian waters this species is found at

Rowley Shoals The Rowley Shoals is a group of three atoll-like coral reefs south of the Timor Sea, about west of Broome on the northwestern Australian coast, centered on , on the edge of one of the widest continental shelves in the world. Each atoll cov ...

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to ...

, at the Ashmore Reef in the

Timor Sea The Timor Sea ( id, Laut Timor, pt, Mar de Timor, tet, Tasi Mane or ) is a relatively shallow sea bounded to the north by the island of Timor, to the east by the Arafura Sea, and to the south by Australia. The sea contains a number of reefs, ...

, and from the northern Great Barrier Reef to Escape Reef,

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

. It is also found at

Christmas Island Christmas Island, officially the Territory of Christmas Island, is an Australian external territory comprising the island of the same name. It is located in the Indian Ocean, around south of Java and Sumatra and around north-west of the ...

and the

Cocos (Keeling) Islands ) , anthem = "'' Advance Australia Fair''" , song_type = , song = , image_map = Australia on the globe (Cocos (Keeling) Islands special) (Southeast Asia centered).svg , map_alt = Location of the Cocos (Keeling) Islands , map_caption = ...

. This species is found on coral reefs at depths between .

Biology

''Caesio teres'' feeds on

zooplankton Zooplankton are the animal component of the planktonic community ("zoo" comes from the Greek word for ''animal''). Plankton are aquatic organisms that are unable to swim effectively against currents, and consequently drift or are carried along by ...

. It is diurnal, and lives in groups and forms schools with other species of fusiliers such as '' Caesio xanthonota''.The adults migrate to defined areas in The vicinity of the reef where they spawn close to the surface over and in the openings of deep channels during ebbing tides, the timing being governed by lunar cycles. It is an oviparous species which lays large numbers of small, pelagic eggs.

Fisheries

Caesio teres is targeted by fisheries in some parts of its distribution and frequently drive-in nets are used to catch it.

References

External links

World Register of Marine Species

Integrated Taxonomic Information System
* {{Taxonbar, from=Q2192025 teres Fish described in 1906