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Overview

Comprehensive Description

Biology

Found in association with Acropora loripes and Acropora elseyi; commonly in pairs (Ref. 36585); a coral-commensal species (Ref. 72446). Feeds on copepods, forams, and unidentifiable flocculent material (may represent in part the remains of coral tissue) (Ref. 36585).
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Distribution

West Pacific.
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Western Central Pacific: Fiji, Great Barrier Reef, New Caledonia and Tonga.
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Physical Description

Morphology

Dorsal spines (total): 7; Dorsal soft rays (total): 10 - 12; Analspines: 1; Analsoft rays: 9 - 10; Vertebrae: 26
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Size

Max. size

2.6 cm SL (male/unsexed; (Ref. 36585))
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Diagnostic Description

Two oblique pigment bars on the head posterodorsal to the eye. Uniquely derived lower jaw, modified anteromedially into a dentigerous, fleshy projection and a row of elongate, transversely oriented papillae in the ventral portion of the cheek. Interopercular-isthmus groove nearly straight. Caudal fin rounded.
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Type Information

Paratype for Gobiodon brochus Harold & Winterbottom
Catalog Number: USNM 340097
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): J. Williams et al.
Year Collected: 1993
Locality: Tonga: Tongatapu Islands, Malinoa Island, reef on west side of island., Malinoa Island, Tongatapu Group, Tongatapu, Tonga, Tonga Islands, Pacific
Depth (m): 8 to 11
  • Paratype: Harold, A. S. & Winterbottom, R. 1999. Copeia. 1999 (1): 50, figs 1-5.
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Paratype for Gobiodon brochus Harold & Winterbottom
Catalog Number: USNM 340094
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): J. Williams, B. Collette, G. Johnson, C. Baldwin, D. Smith, E. Powers & Crew
Year Collected: 1993
Locality: Tonga: Vava'u Group, Luamoko Island, N. coast at vertical dropoff, small cave in face of wall, lots of coral., Vavau Group, Tonga, Tonga Islands, Pacific
Depth (m): 21 to 31
  • Paratype: Harold, A. S. & Winterbottom, R. 1999. Copeia. 1999 (1): 50, figs 1-5.
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Paratype for Gobiodon brochus Harold & Winterbottom
Catalog Number: USNM 340437
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): J. Williams, B. Collette, G. Johnson, C. Baldwin, E. Powers & M. Mccormick
Year Collected: 1993
Locality: Tonga: Ha'apai Group, Uoleva Island, outside fringing reef on W side., Ha'apai Group, Tonga, Tonga Islands, Pacific
Depth (m): 8 to 11
  • Paratype: Harold, A. S. & Winterbottom, R. 1999. Copeia. 1999 (1): 50, figs 1-5.
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Ecology

Habitat

Environment

reef-associated; marine; depth range 4 - 6 m (Ref. 36585)
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Depth range based on 23 specimens in 1 taxon.
Water temperature and chemistry ranges based on 12 samples.

Environmental ranges
  Depth range (m): 1.5 - 27.5
  Temperature range (°C): 25.198 - 26.987
  Nitrate (umol/L): 0.090 - 0.923
  Salinity (PPS): 34.975 - 35.381
  Oxygen (ml/l): 4.620 - 4.746
  Phosphate (umol/l): 0.122 - 0.171
  Silicate (umol/l): 0.983 - 3.014

Graphical representation

Depth range (m): 1.5 - 27.5

Temperature range (°C): 25.198 - 26.987

Nitrate (umol/L): 0.090 - 0.923

Salinity (PPS): 34.975 - 35.381

Oxygen (ml/l): 4.620 - 4.746

Phosphate (umol/l): 0.122 - 0.171

Silicate (umol/l): 0.983 - 3.014
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Trophic Strategy

Found in association with Acropora loripes and Acropora elseyi; commonly in pairs. Feeds on copepods, forams, and unidentifiable flocculent material (may represent in part the remains of coral tissue) (Ref. 36585).
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Gobiodon brochus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Threats

Not Evaluated
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