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Overview

Comprehensive Description

Biology

Common on coral reefs. Adults occur on most reef habitats, usually in pairs, and juveniles inshore or in lagoons or rubble zones (Ref. 48635). Occurs singly or in small aggregations. Feeds on small fishes and benthic invertebrates. A protogynous hermaphrodite (Ref. 9785). Juvenile mimics poison-danged blenny Miacanthus grammistes, Batesian mimic (Ref. 90102).
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Distribution

Indo-West Pacific: Maldives, Laccadives and Sri Lanka east to Caroline Island, Fiji and Tonga, north to Ryukyu Islands, south to Shark Bay (Western Australia), Queensland (Australia), Lord Howe Island and New Caledonia.
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Indo-West Pacific: Maldives (Ref. 11303) and the Laccadive Islands to Fiji, north to southern Japan, south to Lord Howe Island. Recently reported from Tonga (Ref. 37816).
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Indo-West Pacific: Maldives, Laccadives and Sri Lanka east to Caroline Island, Fiji and Tonga, north to Ryukyu Islands, south to Shark Bay (Western Australia), Queensland (Australia), Lord Howe Island and New Caledonia.
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Physical Description

Morphology

Dorsal spines (total): 10; Dorsal soft rays (total): 9; Analspines: 3; Analsoft rays: 7
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Size

Max. size

25.0 cm TL (male/unsexed; (Ref. 90102))
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Maximum size: 230 mm TL
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Maximum size: 230 mm NG
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Diagnostic Description

Description: Some geographical variations, especially different between Indian and Pacific Oceans; Pacific form with yellow stripes and yellow dorsal fin, while the Indian ocean form lacks the yellow (Ref. 48635). Head scales reaching to or just in front of anterior nostrils. Lower limb of preopercle scaly. Antrorse (forward-directed) suborbital spine present beneath eye. Pelvic fins long, reaching to or almost to level of origin of anal fin. Axillary scale present. Upper part of body olive or greyish-brown, pearly-white below. 2 narrow yellow stripes on head, another dark red-edged pearly-white stripe from mouth to base of soft dorsal fin. A yellow mid dorsal stripe from above ayes along base of dorsal fin. A whitish patch just below base of posterior half of soft dorsal rays. Juveniles with 3 dark brown stripes on upper part of body, interspaces between stripes yellow (Ref. 3810). Body depth 2.5-3.0 in SL, snout shorter than diameter of eye (Ref. 90102).
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Ecology

Habitat

Depth range based on 93 specimens in 1 taxon.
Water temperature and chemistry ranges based on 64 samples.

Environmental ranges
  Depth range (m): 0.5 - 55
  Temperature range (°C): 26.262 - 29.325
  Nitrate (umol/L): 0.050 - 1.251
  Salinity (PPS): 32.185 - 35.322
  Oxygen (ml/l): 4.130 - 4.698
  Phosphate (umol/l): 0.073 - 0.380
  Silicate (umol/l): 0.567 - 6.058

Graphical representation

Depth range (m): 0.5 - 55

Temperature range (°C): 26.262 - 29.325

Nitrate (umol/L): 0.050 - 1.251

Salinity (PPS): 32.185 - 35.322

Oxygen (ml/l): 4.130 - 4.698

Phosphate (umol/l): 0.073 - 0.380

Silicate (umol/l): 0.567 - 6.058
 
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Depth: 1 - 25m.
From 1 to 25 meters.
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Environment

reef-associated; marine; depth range 1 - 25 m (Ref. 9710)
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Depth range based on 93 specimens in 1 taxon.
Water temperature and chemistry ranges based on 64 samples.

Environmental ranges
  Depth range (m): 0.5 - 55
  Temperature range (°C): 26.262 - 29.325
  Nitrate (umol/L): 0.050 - 1.251
  Salinity (PPS): 32.185 - 35.322
  Oxygen (ml/l): 4.130 - 4.698
  Phosphate (umol/l): 0.073 - 0.380
  Silicate (umol/l): 0.567 - 6.058

Graphical representation

Depth range (m): 0.5 - 55

Temperature range (°C): 26.262 - 29.325

Nitrate (umol/L): 0.050 - 1.251

Salinity (PPS): 32.185 - 35.322

Oxygen (ml/l): 4.130 - 4.698

Phosphate (umol/l): 0.073 - 0.380

Silicate (umol/l): 0.567 - 6.058
 
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Depth: 1 - 25m.
From 1 to 25 meters.

Habitat: reef-associated.
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Trophic Strategy

Occur inshore (Ref. 75154). Found in small aggregations. Juveniles appear to be Batesian mimics of poison-fanged blenniids (Meiacanthus).
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Scolopsis bilineata

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 15
Species With Barcodes: 1
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Genomic DNA is available from 20 specimens with morphological vouchers housed at Field Museum of Natural History & Ocean Genome Legacy
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Conservation

Threats

Not Evaluated
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: subsistence fisheries; aquarium: commercial
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Wikipedia

Two-lined monocle bream

The two-lined monocle bream, Scolopsis bilineata, is a species of threadfin bream native to the Indian Ocean and the western Pacific Ocean. An inhabitant of coral reefs, this species can be found at depths from 1 to 25 m (3.3 to 82.0 ft). They are carnivorous, preying on smaller fishes, as well as benthic invertebrates. This species can reach a length of 25 cm (9.8 in), though most only reach a length of around 13 cm (5.1 in). This species is sought-after by local peoples for food and can also be found in the aquarium trade.[1]

References[edit]

  1. ^ Froese, Rainer and Pauly, Daniel, eds. (2014). "Scolopsis bilineata" in FishBase. February 2014 version.
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