Overview

Comprehensive Description

Biology

Adults inhabit lagoon and seaward reefs, also in sheltered clear water reefs in moderate depths (Ref. 48636). Feed on planktonic crustaceans, fish eggs, algae, and small invertebrates. Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
  • Allen, G.R. 1991 Damselfishes of the world. Mergus Publishers, Melle, Germany. 271 p. (Ref. 7247)
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Distribution

Western Central Pacific: Indonesia, Philippines, Palau, Western Australia, Papua New Guinea, New Britain, Solomon Islands and Vanuatu.
  • Myers, R.F. 1991 Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
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Indo-Australian Archipelago.
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Physical Description

Morphology

Dorsal spines (total): 13; Dorsal soft rays (total): 13 - 14; Analspines: 2; Analsoft rays: 14 - 15
  • Myers, R.F. 1991 Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
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Size

Maximum size: 90 mm NG
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Max. size

9.0 cm TL (male/unsexed; (Ref. 9710))
  • Lieske, E. and R. Myers 1994 Collins Pocket Guide. Coral reef fishes. Indo-Pacific & Caribbean including the Red Sea. Haper Collins Publishers, 400 p. (Ref. 9710)
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Diagnostic Description

Description: Plain grey with black on anal fin and yellowish posteriorly over back (Ref. 48636). Pectoral-fin base spot black large. Anal fin black. Body depth 2.0-2.1 in SL (Ref. 90102).
  • Myers, R.F. 1991 Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
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Ecology

Habitat

Environment

reef-associated; non-migratory; marine; depth range 6 - 60 m (Ref. 7247)
  • Allen, G.R. 1991 Damselfishes of the world. Mergus Publishers, Melle, Germany. 271 p. (Ref. 7247)
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Depth range based on 16 specimens in 1 taxon.
Water temperature and chemistry ranges based on 13 samples.

Environmental ranges
  Depth range (m): 2.135 - 24
  Temperature range (°C): 28.843 - 29.205
  Nitrate (umol/L): 0.053 - 0.119
  Salinity (PPS): 34.131 - 34.582
  Oxygen (ml/l): 4.525 - 4.663
  Phosphate (umol/l): 0.105 - 0.182
  Silicate (umol/l): 1.216 - 1.999

Graphical representation

Depth range (m): 2.135 - 24

Temperature range (°C): 28.843 - 29.205

Nitrate (umol/L): 0.053 - 0.119

Salinity (PPS): 34.131 - 34.582

Oxygen (ml/l): 4.525 - 4.663

Phosphate (umol/l): 0.105 - 0.182

Silicate (umol/l): 1.216 - 1.999
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 6 - 60m.
From 6 to 60 meters.

Habitat: reef-associated. Inhabits lagoon and seaward reefs. Feeds on planktonic crustaceans, fish eggs, algae, and small invertebrates.
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Trophic Strategy

Occurs inshore (Ref. 75154). Inhabits lagoon and seaward reefs. Feeds on planktonic crustaceans, fish eggs, algae, and small invertebrates.
  • Allen, G.R. 1991 Damselfishes of the world. Mergus Publishers, Melle, Germany. 271 p. (Ref. 7247)
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Life History and Behavior

Life Cycle

Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
  • Breder, C.M. and D.E. Rosen 1966 Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p. (Ref. 205)
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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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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: of no interest
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