Habitat and Ecology
The sexes are separate among the acanthurids (Reeson 1983). There is a possibility of sexual dimorphism in Zebrasomas with cloacas bigger in females (Bushnell et al. 2010). This dimorphic character most probably applies to all Zebrasomas (J.H. Choat pers comm. 2010).
Depth range (m): 17 - 18
Depth range (m): 17 - 18
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From 10 to 61 meters.
Molecular Biology and Genetics
Barcode data: Zebrasoma gemmatum
No available public DNA sequences.
Download FASTA File
Statistics of barcoding coverage: Zebrasoma gemmatum
Public Records: 1
Specimens with Barcodes: 3
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
The gem tang, spotted tang or Mauritian tang (Zebrasoma gemmatum) is a marine reef tang in the fish family Acanthuridae. They may live at water depths of 10 – 61 m (33 – 200 ft) or more. The fish grow to a maximum length of 22 cm (8.7 in). Zebrasoma gemmatum is found in the Western Indian Ocean off the coast of Mozambique, South Africa and Madagascar and near the islands of Réunion and Mauritius. Z.gemmatum is a highly prized specimen by marine aquarists and often commands prices of $3000 or more.
- Myers, R., Choat, J.H., Abesamis, R., Clements, K.D., McIlwain, J., Nanola, C., Rocha, L.A., Russell, B. & Stockwell, B. 2012. Zebrasoma gemmatum. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 27 October 2012.