Tuesday 21 May
Saint Paul's gregory (Stegastes sanctipauli)
What’s the World’s Favourite Species?Find out here.
Saint Paul's gregory fact file
- Find out more
- Print factsheet
Saint Paul's gregory description
Saint Paul’s gregory (Stegastes sanctipauli) is an attractive fish belonging to a group more commonly know as the damselfish (2). Members of the Pomacentridae family are typically deep-bodied, flattened from side to side, and are often highly colourful (3). The bright yellow body of Saint Paul’s gregory is flanked with small brown marks along the back (4).
- Length: up to 9 cm (2)
Saint Paul's gregory biology
Considered one of the most numerous species in the waters around Saint Paul’s Rocks, Saint Paul’s gregory plays an important role in the ecosystem (5). It is primarily thought to be a territorial herbivore which aggregates around reefs and grazes on benthic algae (5). However, research has shown that it may sometimes prey opportunistically upon fish eggs and small benthic invertebrates (5). Juvenile Saint Paul’s gregorys are also known to engage in cleaning behaviour where they remove dead skin and parasites from the skin of visiting fish (8). Its varied diet allows this adaptable fish to thrive in the harsh oceanic environment it lives in (5).
Little is known about the courtship and breeding of the Saint Paul’s gregory due to its isolated and remote location. However, damselfish are generally known to be highly territorial with females laying clusters of adhesive oval-shaped eggs on coral or rocks which are then guarded by the male (2) (3).Top
Saint Paul's gregory range
Saint Paul’s gregory is endemic to an isolated cluster of rocky islands known as Saint Paul’s Rocks, located around 1,000 kilometres off the coast of Brazil, in the Saint Peter and Saint Paul Archipelago (4) (5). This archipelago consists of around 15 small islands in total, with Saint Paul’s Rocks measuring only around 400 metres across (6) (7).Top
Saint Paul's gregory habitat
Saint Paul’s gregory flourishes in shallow rock pools at depths of up to 60 metres, where it usually occurs amongst rocks and rubble (2).Top
Saint Paul's gregory status
Saint Paul's gregory is classified as Vulnerable (VU) on the IUCN Red List (1).Top
Saint Paul's gregory threats
Although Saint Paul’s gregory is not thought to be directly affected by human activities, its extremely restricted range means that it is vulnerable to chance natural events such as extreme weather conditions (9). It is not thought to be currently targeted by any commercial fisheries (9).Top
Saint Paul's gregory conservation
Although there are currently no specific conservation efforts aimed at Saint Paul’s gregory, the Saint Peter and Saint Paul Archipelago was designated as an environmentally protected area (APA) in 1986, thus affording this species some protection (10).
An extensive evaluation of the distribution and population size of the endemic species of Saint Paul’s Rocks is required in order to evaluate possible threats and identify the species most at risk of extinction (9).Top
Find out more
Find more information on the scientific station of Saint Peter and Saint Paul’s Archipelago:
The scientific station of São Pedro and São Paulo Archipelago – Brazil:
This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
- Simple plants that lack roots, stems and leaves but contain the green pigment chlorophyll. Most occur in marine and freshwater habitats.
- Relating to the lowermost region of a body of water such as an ocean or lake, or to the organisms that live there.
- A species or taxonomic group that is only found in one particular country or geographic area.
- An animal that consumes only vegetable matter.
- Animals with no backbone, such as insects, crustaceans, worms, molluscs, spiders, cnidarians (jellyfish, corals, sea anemones) and echinoderms.
- Describes an animal, a pair of animals or a group that occupies and defends an area.
IUCN Red List (July, 2011)
Fishbase - Saint Paul’s gregory (July, 2011)
- Stokes, F. (1994) Diver’s and Snorkeler’s Guide to the Fishes and Sea Life of the Caribbean, Florida, Bahamas and Bermuda. The Academy of Natural Sciences of Philadelphia, Philadelphia.
- Dias, E., Souza, A. and Molina, W. (2007) Lack of interpopulation genetic structure in the genus Stegastes (Perciformes) with indication of local introgression. Genetics and Molecular Research, 6(4): 1097-1106.
- Feitoza, B., Rocha, L., Luiz-Junior, O., Floeter, S. and Gasparini, J. (2003) Reef fishes of Saint Paul’s Rocks: new records and notes on biology and zoogeography. Aqua Journal of Ichthyology and Aquatic Biology, 7(2): 1-22.
- Edwards, A. and Lubbock, R. (1983) Marine zoogeography of St Paul's rocks. Journal of Biogeography, 10(1): 65-72.
- Vaske Jr, T., Lessa, R., de Nobrega, M., Montealegre-Quijano, S., Marcante Santana, F and Bezerra Jr, J. (2005) A checklist of fishes from Saint Peter and Saint Paul Archipelago, Brazil. Journal of Applied Ichthyology, 21(1): 75-79.
- Gasparini, J. Luiz, O. and Sazima, I. (2008) Cleaners from underground. Coral Reefs, 27: 143.
- Luiz, O., Joyeux, J. and Gasparini, J. (2007) Rediscovery of Anthias salmopunctatus Lubbock & Edwards, 1981, with comments on its natural history and conservation. Journal of Fish Biology, 70: 1283-1286.
Global Legal Information Network - Declaration of the Saint Peter and Saint Paul Archipelago as an environmentally protected area, 1986 (July, 2011)
MyARKive offers the scrapbook feature to signed-up members, allowing you to organize your favourite ARKive images and videos and share them with friends.
Terms and Conditions of Use of Materials
Copyright in this website and materials contained on this website (Material) belongs to Wildscreen or its licensors.
Visitors to this website (End Users) are entitled to:
- view the contents of, and Material on, the website;
- download and retain copies of the Material on their personal systems in digital form in low resolution for their own personal use;
- teachers, lecturers and students may incorporate the Material in their educational material (including, but not limited to, their lesson plans, presentations, worksheets and projects) in hard copy and digital format for use within a registered educational establishment, provided that the integrity of the Material is maintained and that copyright ownership and authorship is appropriately acknowledged by the End User.
End Users shall not copy or otherwise extract, alter or manipulate Material other than as permitted in these Terms and Conditions of Use of Materials.
Additional use of flagged material
Green flagged material
Certain Material on this website (Licence 4 Material) displays a green flag next to the Material and is available for not-for-profit conservation or educational use. This material may be used by End Users, who are individuals or organisations that are in our opinion not-for-profit, for their not-for-profit conservation or not-for-profit educational purposes. Low resolution, watermarked images may be copied from this website by such End Users for such purposes. If you require high resolution or non-watermarked versions of the Material, please contact Wildscreen with details of your proposed use.
Creative commons material
Certain Material on this website has been licensed to Wildscreen under a Creative Commons Licence. These images are clearly marked with the Creative Commons buttons and may be used by End Users only in the way allowed by the specific Creative Commons Licence under which they have been submitted. Please see http://creativecommons.org for details.
Any other use
Please contact the copyright owners directly (copyright and contact details are shown for each media item) to negotiate terms and conditions for any use of Material other than those expressly permitted above. Please note that many of the contributors to ARKive are commercial operators and may request a fee for such use.
Save as permitted above, no person or organisation is permitted to incorporate any copyright material from this website into any other work or publication in any format (this includes but is not limited to: websites, Apps, CDs, DVDs, intranets, extranets, signage, digital communications or on printed materials for external or other distribution). Use of the Material for promotional, administrative or for-profit purposes is not permitted.