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Overview

Comprehensive Description

Biology

Adults are common around rubble and sand in steep outer reef slopes (Ref. 9710), and drop-offs, usually adjacent to very deep water. They form small aggregations in soft bottom habitats with sponges and soft corals. The group usually comprising juveniles and females which are dominated by a large male (Ref. 48636). Oviparous, distinct pairing during breeding (Ref. 205).
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Distribution

Range Description

This species is found in the Indo-Pacific from the Shizuoka Prefecture in Japan, the Palau Archipelago, New Guinea, New Britain, New Caledonia, Vanuatu and Marshall Islands, Poor Knights Islands in New Zealand (probably a vagrant) (Gomon pers. comm. 2006) and Queensland, Australia. It is also recorded from the Maldives, Madagascar and Mauritius (Gomon 2006).
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Indo-Pacific: Madagascar to New Caledonia, Japan to New Zealand.
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Indo-West Pacific: Madagascar, Mauritius (Mascarenes); eastern Indonesia east to Palau and New Guinea, south to New Caledonia and Vanuatu.
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Physical Description

Morphology

Dorsal spines (total): 12; Dorsal soft rays (total): 9 - 10; Analspines: 3; Analsoft rays: 11 - 12
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Size

Maximum size: 100 mm TL
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Max. size

10.0 cm TL (male/unsexed; (Ref. 2334))
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Diagnostic Description

Description

Common in steep outer reef slopes.
  • Anon. (1996). FishBase 96 [CD-ROM]. ICLARM: Los Baños, Philippines. 1 cd-rom pp.
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Small juveniles are bright yellow and females become more orange as red lines develop. Males are mainly pink with red lines (Ref. 48636).
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Type Information

Paratype for Bodianus bimaculatus Allen
Catalog Number: USNM 208347
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): G. Allen
Year Collected: 1972
Locality: Palau Island; Augulpelu Reef Off Aurapushekaru Island Vertical Dropoff., Palau Islands, Palau, Caroline Islands, Pacific
Depth (m): 41 to 41
  • Paratype: Allen, G. R. 1973. Proceedings of the Biological Society of Washington. 86 (2).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This is a small species, to about 59 mm SL. It is shallow ranging, collected in depths of 30-60 m. Allen (1973) reported the species as “being moderately common” on deep reefs associated with vertical dropoffs in Palau.

It forms small aggregations in soft bottom habitats with sponges and soft corals. The group usually comprising juveniles and females which are dominated by a large male (Kuiter and Tonozuka 2001).

Although there appear to be red and yellow forms of this species, no morphological differences are apparent. B. Russell (pers. comm. 2008) observed juveniles and adults of both living together on deep reefs of Papua New Guinea, but did not see them interact. At depths in excess of 60 m, bright neon yellow individuals occurred in groups around isolated rocks on muddy slopes, and individuals with broader red lines on the flanks were more often seen near ledges or beneath overhangs on drop-offs.

Systems
  • Marine
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Environment

reef-associated; marine; depth range 30 - 60 m (Ref. 1602), usually 30 - 60 m (Ref. 27115)
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Depth range based on 18 specimens in 1 taxon.
Water temperature and chemistry ranges based on 10 samples.

Environmental ranges
  Depth range (m): 39 - 96.05
  Temperature range (°C): 23.061 - 26.748
  Nitrate (umol/L): 0.241 - 4.047
  Salinity (PPS): 34.562 - 35.503
  Oxygen (ml/l): 3.888 - 4.855
  Phosphate (umol/l): 0.133 - 0.466
  Silicate (umol/l): 0.566 - 6.450

Graphical representation

Depth range (m): 39 - 96.05

Temperature range (°C): 23.061 - 26.748

Nitrate (umol/L): 0.241 - 4.047

Salinity (PPS): 34.562 - 35.503

Oxygen (ml/l): 3.888 - 4.855

Phosphate (umol/l): 0.133 - 0.466

Silicate (umol/l): 0.566 - 6.450
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 30 - 60m.
From 30 to 60 meters.

Habitat: reef-associated. Common around rubble and sand in steep outer reef slopes (Ref. 9710).
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Trophic Strategy

Occurs inshore (Ref. 75154).
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Life History and Behavior

Life Cycle

Oviparous, distinct pairing during breeding (Ref. 205).
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Bodianus bimaculatus

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Statistics of barcoding coverage: Bodianus bimaculatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 3
Specimens with Barcodes: 5
Species With Barcodes: 1
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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
Russell, B. & Myers, R.

Reviewer/s
Sadovy, Y. & Carpenter, K.E.

Contributor/s

Justification
Little is known about the population and life history characteristics of this species. It has a very widespread distribution in the Indo-West Pacific. It is moderately small and is sought by aquarium fish collectors, but there is no available catch data. It is listed as Least Concern.
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Population

Population
There is no population information available for this species.

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known for this species. There is a potential threat from degradation of coral reefs.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
There are no specific conservation measures in place for this species. Its distribution overlaps several marine protected areas within its range.
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Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: commercial
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Wikipedia

Bodianus bimaculatus

The twospot hogfish, Bodianus bimaculatus, is a species of wrasse native to the Indo-Pacific from Madagascar to New Caledonia and from Japan to New Zealand. This species prefers areas of reefs with substrates of rubble or sand at depths from 30 to 60 m (98 to 200 ft). This species can reach a length of 10 cm (3.9 in). It can be found in the aquarium trade.[2]

References[edit]

  1. ^ Russell, B. & Myers, R. 2010. Bodianus bimaculatus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. <www.iucnredlist.org>. Downloaded on 01 November 2013.
  2. ^ Froese, Rainer and Pauly, Daniel, eds. (2013). "Bodianus bimaculatus" in FishBase. August 2013 version.
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