Overview

Comprehensive Description

Biology

Found on seaward reefs of Guam and Tinian, to a depth of 8 m (Ref. 1602).
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Distribution

Western Pacific: Mariana Islands. More recently reported from the Chesterfield Islands (Ref. 11897).
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Western Pacific.
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Physical Description

Morphology

Dorsal spines (total): 4; Dorsal soft rays (total): 8; Analspines: 0; Analsoft rays: 7 - 8
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Size

Max. size

2.3 cm SL (male/unsexed; (Ref. 28618))
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Diagnostic Description

Preopercular spine 0[1/0]1.
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Type Information

Paratype for Synchiropus circularis Fricke
Catalog Number: USNM 267391
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): R. Jones & et al.
Year Collected: 1970
Locality: Beach Cave Cove, NW of Tinian Town, Tinian, Marianas Islands., Tinian, Northern Mariana Islands, Mariana Islands, Pacific
  • Paratype: Fricke, R. 1984. Annali del Museo Civico di Storia Naturale "Giacomo Doria". 85: 68.
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Holotype for Synchiropus circularis Fricke
Catalog Number: USNM 267390
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): R. Jones & et al.
Year Collected: 1970
Locality: Beach Cave Cove, NW of Tinian Town, Tinian, Marianas Islands., Tinian, Northern Mariana Islands, Mariana Islands, Pacific
  • Holotype: Fricke, R. 1984. Annali del Museo Civico di Storia Naturale "Giacomo Doria". 85: 68.
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Ecology

Habitat

Environment

reef-associated; marine; depth range ? - 8 m (Ref. 1602)
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Depth range based on 2 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 5 - 5.65
  Temperature range (°C): 25.709 - 25.709
  Nitrate (umol/L): 0.151 - 0.151
  Salinity (PPS): 35.312 - 35.312
  Oxygen (ml/l): 4.727 - 4.727
  Phosphate (umol/l): 0.141 - 0.141
  Silicate (umol/l): 1.409 - 1.409

Graphical representation

Depth range (m): 5 - 5.65
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 0 - 8m.
Recorded at 8 meters.

Habitat: reef-associated.
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Conservation

Threats

Not Evaluated
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