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Overview

Comprehensive Description

Biology

Adults occur close to shore in rocky or dead reef areas where visibility is often reduced due to silting and wave action. Territorial, they maintain and 'weed' filamentous algae patches growing on dead coral (Ref. 9710). 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).
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Distribution

Indo-Pacific: Ryukyu Islands, encompassing the Indo-Malayan Archipelago, Western Australia north of Abrolhos Islands; reaching eastward along the northern margin of the tropical Indian Ocean to Sri Lanka and India.
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Indo-West Pacific.
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Physical Description

Morphology

Dorsal spines (total): 13; Dorsal soft rays (total): 14 - 16; Analspines: 2; Analsoft rays: 12 - 14
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Size

Maximum size: 120 mm SL
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Max. size

12.0 cm SL (male/unsexed; (Ref. 7247))
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Diagnostic Description

Body and median fins generally brown to nearly black; body paler ventrally; fins grading to smoky gray distally. Margin of scales on sides with blackish streak, appearing as series of transverse bands; few small blue spots scattered on head and sides. Pelvic and anal fins bright blue anteriorly. Morphologically similar with S. fasciolatus but S. obreptus has well-developed serrae on the suborbital and preopercle margins, posterior outline of soft dorsal more pointed and angular, and it differs in habitat. Lips dusky brown.
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Ecology

Habitat

Environment

reef-associated; non-migratory; marine; depth range 2 - 10 m (Ref. 9710)
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Depth range based on 6 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 2 - 6
  Temperature range (°C): 27.306 - 27.306
  Nitrate (umol/L): 0.365 - 0.365
  Salinity (PPS): 34.253 - 34.253
  Oxygen (ml/l): 4.577 - 4.577
  Phosphate (umol/l): 0.171 - 0.171
  Silicate (umol/l): 3.666 - 3.666

Graphical representation

Depth range (m): 2 - 6
 
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Depth: 2 - 10m.
From 2 to 10 meters.

Habitat: reef-associated.
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Trophic Strategy

Occurs inshore (Ref. 75154). Found close to shore in rocky or dead reef areas where visibility is often reduced due to silting and wave action (Ref. 9710).
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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).
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Stegastes obreptus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Threats

Not Evaluated
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