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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).
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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).
  • Gill, A.C. 1999 Pseudochromidae. Dottybacks (eelblennies). p. 2557-2577. In Carpenter, K. E. and V. E. Niem. 1999. Species identification guide for fisheries purposes. The living marine resources of the western central Pacific. Bony fishes part 2 (Mugilidae to Carangidae). FAO, Rome. : iii-v; 2069-2790. (Ref. 37748)   http://www.fishbase.org/references/FBRefSummary.php?id=37748&speccode=15009 External link.
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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): 22 - 23; Analspines: 3; Analsoft rays: 12 - 13
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Size

Maximum size: 60 mm NG
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Max. size

6.0 cm TL (male/unsexed; (Ref. 9710))
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Diagnostic Description

Females sexually dichromatic dottyback are uniformly grey, sometimes becoming yellowish or reddish on the tail (Ref. 37816).
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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


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