Overview

Comprehensive Description

Biology

Found in silty protected reefs, over sand and rubble (Ref. 9710). Feeds on benthic algae. Also caught with nets and other artisanal gear. Mainly sold fresh.
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Distribution

Range Description

This species is found in the east coast of Africa from Kenya to South Africa (Sodwana Bay), to Madagascar and east to Rodrigues.
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Western Indian Ocean: known only from Kenya to South Africa. Presence in Somalia to be confirmed (Ref. 30573).
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Western Indian Ocean.
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Physical Description

Size

Maximum size: 300 mm TL
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Max. size

30.0 cm TL (male/unsexed; (Ref. 5490))
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Type Information

Paratype for Chlorurus atrilunula
Catalog Number: USNM 226362
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): M. Smith
Year Collected: 1952
Locality: Kenya, Shimoni, Kenya, Indian
  • Paratype: Randall, J. E. & Bruce, R. W. 1983. Ichthyological Bulletin of the J. L. B. Smith Institute of Ichthyology, Rhodes University, Grahamstown. No. 47: 9.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species inhabits reef front and outer slopes in depths from 1-25 m. The maximum length recorded was 36 cm (TL) (Heemstra and Heemstra 2004).

Systems
  • Marine
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Environment

reef-associated; non-migratory; marine; depth range 1 - 15 m (Ref. 9710)
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Depth: 1 - 15m.
From 1 to 15 meters.

Habitat: reef-associated.
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Trophic Strategy

Found in silty protected reefs, over sand and rubble. Feeds on benthic algae.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Chlorurus atrilunula

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
Choat, J.H., Russell, B., Clements, K.D., Rocha, L.A., Myers, R., Muljadi, A., Lazuardi, M.E., Pardede, S. & Rahardjo, P.

Reviewer/s
McIlwain, J. & Craig, M.T.

Contributor/s

Justification
This species is a small parrotfish and is therefore not specifically targeted. It occurs in a number of remote areas and habitat on deeper outer reef slopes that makes it unlikely to be selectively fished. It is therefore listed as Least Concern.

History
  • 2010
    Least Concern
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Population

Population
This species is uncommon in most of its range and maybe abundant in Madagascar (G. Allen pers comm. 2009).

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known for this species.

Parrotfishes show varying degrees of habitat preference and utilization of coral reef habitats, with some species spending the majority of their life stages on coral reefs, while others primarily utilize seagrass beds, mangroves, algal beds, and /or rocky reefs. Although the majority of the parrotfishes occur in mixed habitat (primarily inhabiting seagrass beds, mangroves, and rocky reefs) approximately 78% of these mixed habitat species are experiencing greater than 30% loss of coral reef area and habitat quality across their distributions. Of those species that occur exclusively in coral reef habitat, more than 80% are experiencing a greater than 30% of coral reef loss and degradation across their distributions. However, more research is needed to understand the long-term effects of habitat loss and degradation on these species populations. Widespread coral reef loss and declining habitat conditions are particularly worrying for species that depend on live coral reefs for food and shelter especially as studies have shown that protection of pristine habitats facilitate the persistence of adult populations in species that have spatially separated adult and juvenile habitats. Furthermore, coral reef loss and declining habitat conditions are particularly worrying for some corallivorous excavating parrotfishes that play major roles in reef dynamics and sedimentation (Comeros-Raynal et al. 2012).
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
There are no species-specific conservation measures in place for this species. However, its distribution overlaps several marine protected areas within its range.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial; aquarium: commercial
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