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Overview

Comprehensive Description

Biology

A common but secretive species (Ref. 9710, 48635) found in holes and crevices of exposed outer reef flats and reef margins. Occurs in pairs and feeds on small crabs, isopods, and copepods (Ref. 1602). Usually most abundant in high current or surge areas. Frequently enters the aquarium fish trade and has been bred in captivity (Ref. 37748). Sometimes solitary (Ref 90102).
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Distribution

Western Pacific: Peninsular Malaysia to Hong Kong and the Ryukyu Islands, south to Western Australia, and east to Vanuatu and the Gilbert Islands. Replaced by an undescribed species at Fiji and Tonga and Pseudochromis coccinicauda in the Indian Ocean (Ref. 37816).
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Western Pacific and southeastern Indian Ocean.
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Physical Description

Morphology

Dorsal spines (total): 3; Dorsal soft rays (total): 21 - 23; Analspines: 3; Analsoft rays: 12 - 14
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Size

Max. size

6.2 cm TL (male/unsexed; (Ref. 90102))
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Maximum size: 60 mm NG
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Diagnostic Description

Females sexually dichromatic dottyback are uniformly grey, sometimes becoming yellowish or reddish on the tail (Ref. 37816).Description: Characterized by bluish color of male with extensive yellow area from lower head to pectoral fin, yellow stripe along lateral line, several thin, light blue bars on lower side; female bluish grey to reddish brown, base of yellow tail with red patch; anterior lateral line scales 23-31; predorsal scales 11-19; depth of body 24.9-27.3 % of SL (Ref 90102).
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Ecology

Habitat

Environment

reef-associated; marine; depth range 0 - 30 m (Ref. 37816), usually 0 - 20 m (Ref. 27115)
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Depth range based on 61 specimens in 1 taxon.
Water temperature and chemistry ranges based on 43 samples.

Environmental ranges
  Depth range (m): 0.15 - 35
  Temperature range (°C): 25.778 - 29.336
  Nitrate (umol/L): 0.016 - 0.617
  Salinity (PPS): 33.821 - 35.264
  Oxygen (ml/l): 4.444 - 4.806
  Phosphate (umol/l): 0.094 - 0.270
  Silicate (umol/l): 0.897 - 4.612

Graphical representation

Depth range (m): 0.15 - 35

Temperature range (°C): 25.778 - 29.336

Nitrate (umol/L): 0.016 - 0.617

Salinity (PPS): 33.821 - 35.264

Oxygen (ml/l): 4.444 - 4.806

Phosphate (umol/l): 0.094 - 0.270

Silicate (umol/l): 0.897 - 4.612
 
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Trophic Strategy

Found inshore (Ref. 75154).
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Conservation

Threats

Not Evaluated
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Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: commercial
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Wikipedia

Pseudochromis cyanotaenia

Pseudochromis cyanotaenia is a Pseudochromis from the Western Pacific. It occasionally makes its way into the aquarium trade. It grows to a length of 6 cm.

References[edit]

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