Habitat and Ecology
The sexes are separate and there is evidence of sexual dimorphism in the caudal knives which are relatively larger and longer filaments in males (J.H. Choat pers. comm. 2010).
Molecular Biology and Genetics
Barcode data: Naso elegans
Below is a 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 and other sequences.
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Download FASTA File
Statistics of barcoding coverage: Naso elegans
Public Records: 2
Specimens with Barcodes: 2
Species With Barcodes: 1
IUCN Red List Assessment
Red List Category
Red List Criteria
In the Nabq Managed Resource Protected Area, South Sinai, Egyptian Red Sea, mean abundances of this species showed differences at various depths and between no-take zones (NTZ) and take zones (TZ). The greater abundance of the Acanthuridae in the fished area than in the NTZ across 1, 3 and 10 m depths, can be attributed to a result of reduced predation or competition (Ashworth and Ormond 2005).
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
Naso elegans is a tropical fish found in coral reefs in the Indian Ocean. It is commonly known as the Elegant unicornfish, Indian orange-spine unicorn, Orange-spine unicorn, and Smoothheaded unicornfish.
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