Habitat and Ecology
Acanthurus tristis occurs on shallow lagoon and seaward reefs, in areas of mixed coral, rock or sand. It generally occurs in deeper and more sheltered waters, frequently over sand and rubble bottoms (J.H. Choat pers. comm. 2010). It is classified as a detritivore (Choat and Beood pers. obs. in Green and Bellwood 2009). The sexes are separate among the acanthurids (Reeson 1983). Acanthurids do not display obvious sexual dimorphism, males assume courtship colours (J.H. Choat pers. comm. 2010). Juveniles of this species resemble Centropyge eibli (Kuiter and Debelius 1994).
From 2 to 26 meters.
Habitat: reef-associated. Occurs in shallow lagoon and seaward reefs, in areas of mixed coral, rock or sand (Ref. 9710).
Molecular Biology and Genetics
Barcode data: Acanthurus sp.
Below is the sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.
See the BOLD taxonomy browser for more complete information about this specimen.
Other sequences that do not yet meet barcode criteria may also be available.
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Download FASTA File
Statistics of barcoding coverage: Acanthurus sp.
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
IUCN Red List Assessment
Red List Category
Red List Criteria
Surgeonfishes show varying degrees of habitat preference and utilization of coral reef habitats, with some species spending the majority of their life stages on coral reef while others primarily utilize seagrass beds, mangroves, algal beds, and /or rocky reefs. The majority of surgeonfishes are exclusively found on coral reef habitat, and of these, approximately 80% are experiencing a greater than 30% loss of coral reef area and degradation of coral reef habitat quality across their distributions. However, more research is needed to understand the long-term effects of coral reef habitat loss and degradation on these species' populations. Widespread coral reef loss and declining habitat conditions are particularly worrying for species that recruit into areas with live coral cover, 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 (Comeros-Raynal et al. 2012).
Relevance to Humans and Ecosystems
- Froese, Rainer, and Daniel Pauly, eds. (2008). "Acanthurus tristis" in FishBase. December 2008 version.
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