Overview
Distribution
Range Description
This species is only known from the south Pacific Ocean around Pitcairn Island and Rapa Island, and possibly also the Tuamotu Archipelago.
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Eastern Central Pacific: Pitcairn Group and the Tuamoto Archipelago.
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Randall, J.E. and A. Edwards 1984 A new labrid fish of the genus Thalassoma from the Pitcairn group, with a review of related Indo-Pacific species. J. Aquaricult. Aquat. Sci. 4(2):13-32. (Ref. 10372)
http://www.fishbase.org/references/FBRefSummary.php?id=10372&speccode=56820
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Physical Description
Morphology
Dorsal spines (total): 8; Dorsal soft rays (total): 13; Analspines: 3; Analsoft rays: 10; Vertebrae: 25
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Randall, J.E. and A. Edwards 1984 A new labrid fish of the genus Thalassoma from the Pitcairn group, with a review of related Indo-Pacific species. J. Aquaricult. Aquat. Sci. 4(2):13-32. (Ref. 10372)
http://www.fishbase.org/references/FBRefSummary.php?id=10372&speccode=56820
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Size
Max. size
11.6 cm SL (male/unsexed; (Ref. 10372))
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Randall, J.E. and A. Edwards 1984 A new labrid fish of the genus Thalassoma from the Pitcairn group, with a review of related Indo-Pacific species. J. Aquaricult. Aquat. Sci. 4(2):13-32. (Ref. 10372)
http://www.fishbase.org/references/FBRefSummary.php?id=10372&speccode=56820
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Diagnostic Description
Caudal fin varying from slightly rounded in juveniles to emarginate to deeply emarginate in adults. Outer half of caudal fin dusky to blackish in adults (Ref. 10372). Head greenish with a single blue-green stripe running from mouth under eye, then turning ventrally to end on posterior margin of opercle (Ref 9823).
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Randall, J.E. and A. Edwards 1984 A new labrid fish of the genus Thalassoma from the Pitcairn group, with a review of related Indo-Pacific species. J. Aquaricult. Aquat. Sci. 4(2):13-32. (Ref. 10372)
http://www.fishbase.org/references/FBRefSummary.php?id=10372&speccode=56820
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Type Information
Paratype for Thalassoma heiseri Randall & Edwards
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): J. Randall, D. Cannoy & D. Bryant
Year Collected: 1971
Locality: Henderson Island; 0.5 Mile South of NW Corner of Island; Rocky Shore., Henderson Island, Pitcairn Islands, Pacific
Depth (m): 1
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): J. Randall, D. Cannoy & D. Bryant
Year Collected: 1971
Locality: Henderson Island; 0.5 Mile South of NW Corner of Island; Rocky Shore., Henderson Island, Pitcairn Islands, Pacific
Depth (m): 1
- Paratype: Randall, J. E. & Edwards, A. 1984. Journal of Aquariculture and Aquatic Sciences. 4 (2): 15.
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Ecology
Habitat
Habitat and Ecology
Habitat and Ecology
Systems
The main habitat of this species is probably rocky reefs, and maybe also coral reefs to depths of 15 m. The diet probably comprises mainly benthic macro-invertebrates, and the eggs and larvae are probably pelagic.
Systems
- Marine
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Depth range based on 7 specimens in 1 taxon.
Water temperature and chemistry ranges based on 7 samples.
Environmental ranges
Depth range (m): 2.35 - 9
Temperature range (°C): 22.368 - 22.496
Nitrate (umol/L): 0.121 - 0.139
Salinity (PPS): 35.516 - 35.552
Oxygen (ml/l): 5.032 - 5.079
Phosphate (umol/l): 0.145 - 0.165
Silicate (umol/l): 1.623 - 2.486
Graphical representation
Depth range (m): 2.35 - 9
Temperature range (°C): 22.368 - 22.496
Nitrate (umol/L): 0.121 - 0.139
Salinity (PPS): 35.516 - 35.552
Oxygen (ml/l): 5.032 - 5.079
Phosphate (umol/l): 0.145 - 0.165
Silicate (umol/l): 1.623 - 2.486
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
Water temperature and chemistry ranges based on 7 samples.
Environmental ranges
Depth range (m): 2.35 - 9
Temperature range (°C): 22.368 - 22.496
Nitrate (umol/L): 0.121 - 0.139
Salinity (PPS): 35.516 - 35.552
Oxygen (ml/l): 5.032 - 5.079
Phosphate (umol/l): 0.145 - 0.165
Silicate (umol/l): 1.623 - 2.486
Graphical representation
Depth range (m): 2.35 - 9
Temperature range (°C): 22.368 - 22.496
Nitrate (umol/L): 0.121 - 0.139
Salinity (PPS): 35.516 - 35.552
Oxygen (ml/l): 5.032 - 5.079
Phosphate (umol/l): 0.145 - 0.165
Silicate (umol/l): 1.623 - 2.486
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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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
2010
Assessor/s
Pollard, D. & Cabanban, A.
Reviewer/s
Craig, M.T. & Carpenter, K.E.
Contributor/s
Justification
This species has a restricted distribution as it is found only at Pitcairn Island and Rapa Islands, and possibly also the Tuamotu Archipelago. Although there is very little known about its population status, biology or ecology, there are no perceived major threats to this species as the islands where it is found are not heavily populated. It is listed as Least Concern.
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Trends
Population
Population
Population Trend
Theres is no population information available for this species.
Population Trend
Unknown
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Threats
Threats
Major Threats
There are no known major threats to this species.
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Least Concern (LC)
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IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
http://www.fishbase.org/references/FBRefSummary.php?id=57073
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Management
Conservation Actions
Conservation Actions
There are no specific conservation measures in place for this species. The islands within this species range are not heavily populated.
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Wikipedia
Thalassoma heiseri
Thalassoma heiseri is a species of fish in the Labridae family.
| This Labridae article is a stub. You can help Wikipedia by expanding it. |
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