Overview

Comprehensive Description

Biology

A secretive species during the day (Ref. 1602).
  • Randall, J.E. 1998 Revision of the Indo-Pacific squirrelfishes (Beryciformes: Holocentridae: Holocentrinae) of the genus Sargocentron, with descriptions of four new species. Indo-Pac. Fish. (27):105 p. (Ref. 27370)
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Distribution

Western Pacific: Ryukyu Islands; Pohnpei and Kosrae, Caroline Islands; Palau.
  • Myers, R.F. 1991 Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
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Ryukyu Islands, Palau Islands, Caroline Islands
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Physical Description

Morphology

Dorsal spines (total): 11; Dorsal soft rays (total): 13; Analspines: 4; Analsoft rays: 9
  • Randall, J.E. 1998 Revision of the Indo-Pacific squirrelfishes (Beryciformes: Holocentridae: Holocentrinae) of the genus Sargocentron, with descriptions of four new species. Indo-Pac. Fish. (27):105 p. (Ref. 27370)
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Size

Maximum size: 196.6 mm SL
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Max. size

19.7 cm SL (male/unsexed; (Ref. 27370))
  • Randall, J.E. 1998 Revision of the Indo-Pacific squirrelfishes (Beryciformes: Holocentridae: Holocentrinae) of the genus Sargocentron, with descriptions of four new species. Indo-Pac. Fish. (27):105 p. (Ref. 27370)
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Diagnostic Description

Light orange-red body, with a narrow darker red stripe running between longitudinal scale rows; spinous dorsal fin red, spine tips and adjacent membranes white, a blackish blotch on first and second membranes and whitish blotch in the middle of each membrane and adjacent to preceding spine. Four oblique rows of scales on cheek. Body depth 2.6-2.75 in SL; head length 2.5-2.65 in SL; snout length 4.6-4.9 in head length; interorbital width 5.15-5.35 in head length. Mouth slightly inferior. Maxilla nearly reaching or just to a vertical at rear edge of the pupil, upper jaw length 2.4-2.55 in head length; premaxillary groove extending to or slightly posterior to a vertical at anterior edge of orbit; anterior end of nasal bone terminating in 2 diverging spines or a single spine that projects laterally; surface and posterior edge of nasal bone without spinules; small nasal fossa, posterior edge with 1 or 2 large spinules, the anterior edge with 0 to 1; upper edge of suborbital bones with serrated ridge, preceded by a posterolaterally projecting short spine; preopercular spine, 2/3 times in orbit diameter, 3.6-4.3 in head length; longest 4th dorsal spines, 2.2-2.9 in head length; third anal spine 1.45-1.65 in head length (Ref. 27370).
  • Randall, J.E. 1998 Revision of the Indo-Pacific squirrelfishes (Beryciformes: Holocentridae: Holocentrinae) of the genus Sargocentron, with descriptions of four new species. Indo-Pac. Fish. (27):105 p. (Ref. 27370)
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Type Information

Paratype for Sargocentron dorsomaculatum
Catalog Number: USNM 219673
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): T. Yamakawa
Year Collected: 1967
Locality: Koniya, Amami - Oshima, Amami Islands, Kagoshima Pref. Japan, Amami Islands, Kagoshima Prefecture, Japan, Ryukyu Islands, Pacific
  • Paratype: Shimizu, T. & Yamakawa, T. 1979. Japanese Journal of Ichthyology. 26 (2): 119.
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Source: National Museum of Natural History Collections

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Ecology

Habitat

Environment

reef-associated; marine; depth range ? - 9 m (Ref. 27370)
  • Randall, J.E. 1998 Revision of the Indo-Pacific squirrelfishes (Beryciformes: Holocentridae: Holocentrinae) of the genus Sargocentron, with descriptions of four new species. Indo-Pac. Fish. (27):105 p. (Ref. 27370)
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Depth range based on 1 specimen in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 18 - 18
  Temperature range (°C): 28.654 - 28.654
  Nitrate (umol/L): 0.051 - 0.051
  Salinity (PPS): 34.231 - 34.231
  Oxygen (ml/l): 4.444 - 4.444
  Phosphate (umol/l): 0.156 - 0.156
  Silicate (umol/l): 1.437 - 1.437
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 0 - 9m.
Recorded at 9 meters.

Habitat: reef-associated.
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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