Overview

Distribution

Range Description

This species is known only from the Easter Island. The area of occupancy based on 200 m bathymetry, is estimated to be 100 km2.
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Southeastern Pacific: Easter Island.
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Southwest Pacific: currently known only from Easter Island, but might be present from southern subtropical islands to the west such as Pitcairn Islands and Rapa.
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Physical Description

Size

Max. size

25.9 cm NG (male/unsexed; (Ref. 89467))
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Diagnostic Description

Dorsal rays IX,12; anal rays III,12; pectoral rays 13. Lateral-line scales 20 + 5. Head naked except for one or two small partly embedded scales dorsally on opercle. Gill rakers 16-18. Body depth 2.6-2.75 in SL. Dorsal profile of snout forming an angle of about 50°, front of head with a slight median ridge. Origin of the dorsal fin a little posterior to preopercular margin; first dorsal spine flexible, slightly longer than second spine, 4.05-4.15 in head length; space between first two dorsal spines two-thirds space between second and third spines. Caudal fin slightly rounded. Pectoral fins short, 1.6-1.7 in HL. Body bright red, edges of scales darker red; membranes of spinous portion of dorsal fin bluish gray, each with a black spot; each of first three membranes of soft portion of fin with a faint black spot (Ref. 57578).
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Type Information

Paratype for Xyrichtys koteamea
Catalog Number: USNM 375852
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1969
Locality: Easter Island, west of islets off SW corner island, hook and line by local fisherman for J. E. Randall., Easter Island, Pacific
Depth (m): 250
  • Paratype: Randall, J. E. & Allen, G. R. 2004. The Raffles Bulletin of Zoology. 51 (1): 253, Figs. 1-2.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species occurs over sand and rubble bottoms to depths up to 250 m.

Species of Xyrichtys are called Razorfish in allusion to their compressed bodies and the sharp leading edge of their forehead and snout, specialisations for quick entry into sand (Randall 2007).

Systems
  • Marine
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Environment

pelagic-neritic; marine; depth range 50 - 250 m (Ref. 57578)
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Rocha, L.

Reviewer/s
Craig, M.T. & Carpenter, K.E.

Contributor/s

Justification
This species is only known from Easter Island, where is it found in deeper waters. More research is needed to determine any major threats for this species, given its very restricted range. It is listed as Data Deficient.
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Population

Population
There is no population information available for this species. This deep water species is not commonly observed.

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known to this species.
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Data deficient (DD)
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Management

Conservation Actions

Conservation Actions
There are no species-specific conservation measures in place for this species. Easter Island has three designated marine protected areas (Wood 2007).
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