Table of Contents
Overview
Comprehensive Description
Biology
Inhabits both inshore and offshore coral reefs where it occurs singly or in schools. Small juveniles on shallow protected reef flats and are used in the aquarium trade.
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Allen, G.R. 1985 FAO Species Catalogue. Vol. 6. Snappers of the world. An annotated and illustrated catalogue of lutjanid species known to date. FAO Fish. Synop. 125(6):208 p. Rome: FAO. (Ref. 55)
http://www.fishbase.org/references/FBRefSummary.php?id=55&speccode=81
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Distribution
Range Description
Lutjanus decussatus is distributed from southeast India and Sri Lanka, to Papua New Guinea and Micronesia, and north to the Ryukyu Islands, Japan (FAO 2001). The distribution of this species is also reported to extend south to the Great Barrier Reef (Michael 2004).
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Indo-West Pacific: southern India and Sri Lanka to New Guinea, north to the Ryukyu Islands.
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Allen, G.R. 1985 FAO Species Catalogue. Vol. 6. Snappers of the world. An annotated and illustrated catalogue of lutjanid species known to date. FAO Fish. Synop. 125(6):208 p. Rome: FAO. (Ref. 55)
http://www.fishbase.org/references/FBRefSummary.php?id=55&speccode=81
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Physical Description
Morphology
Dorsal spines (total): 10; Dorsal soft rays (total): 13 - 14; Analspines: 3; Analsoft rays: 8 - 9
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Allen, G.R. and J.H. Talbot 1985 Review of the snappers of the genus Lutjanus (Pisces Lutjanidae) from the Indo-Pacific with the description of a new species. Indo-Pacific Fishes (11):87. (Ref. 469)
http://www.fishbase.org/references/FBRefSummary.php?id=469&speccode=150
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Size
Max. size
35.0 cm TL (male/unsexed; (Ref. 48635))
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Kuiter, R.H. and T. Tonozuka 2001 Pictorial guide to Indonesian reef fishes. Part 1. Eels- Snappers, Muraenidae - Lutjanidae. Zoonetics, Australia. 302 p. (Ref. 48635)
http://www.fishbase.org/references/FBRefSummary.php?id=48635&speccode=11113
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Diagnostic Description
Dorsal profile of head moderately sloped. Preorbital bone usually about equal to eye diameter or slightly narrower. Preopercular notch and knob poorly developed. Scale rows on back rising obliquely above lateral line. Trunk with a `checker-board' pattern on upper half of sides. Generally pink to whitish, with a silvery sheen on breast and side of head.
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Allen, G.R. and J.H. Talbot 1985 Review of the snappers of the genus Lutjanus (Pisces Lutjanidae) from the Indo-Pacific with the description of a new species. Indo-Pacific Fishes (11):87. (Ref. 469)
http://www.fishbase.org/references/FBRefSummary.php?id=469&speccode=150
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Ecology
Habitat
Habitat and Ecology
Habitat and Ecology
Systems
The snapper, Lutjanus decussatus, is found on coastal reef faces and sandy slopes with scattered patch reefs at a depth range of 2 - 30 m. This species is also less commonly found on offshore reefs. Fish are typically found to occur individually, but occasionally form schools. Food items include smaller fishes and crustaceans. This species can attain lengths of 35 cm, but lengths of around 20 cm are more common.
Systems
- Marine
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Depth range based on 80 specimens in 1 taxon.
Water temperature and chemistry ranges based on 79 samples.
Environmental ranges
Depth range (m): 1.8 - 58
Temperature range (°C): 26.287 - 28.885
Nitrate (umol/L): 0.075 - 1.522
Salinity (PPS): 32.019 - 34.799
Oxygen (ml/l): 4.130 - 4.582
Phosphate (umol/l): 0.130 - 0.415
Silicate (umol/l): 3.106 - 6.058
Graphical representation
Depth range (m): 1.8 - 58
Temperature range (°C): 26.287 - 28.885
Nitrate (umol/L): 0.075 - 1.522
Salinity (PPS): 32.019 - 34.799
Oxygen (ml/l): 4.130 - 4.582
Phosphate (umol/l): 0.130 - 0.415
Silicate (umol/l): 3.106 - 6.058
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
Water temperature and chemistry ranges based on 79 samples.
Environmental ranges
Depth range (m): 1.8 - 58
Temperature range (°C): 26.287 - 28.885
Nitrate (umol/L): 0.075 - 1.522
Salinity (PPS): 32.019 - 34.799
Oxygen (ml/l): 4.130 - 4.582
Phosphate (umol/l): 0.130 - 0.415
Silicate (umol/l): 3.106 - 6.058
Graphical representation
Depth range (m): 1.8 - 58
Temperature range (°C): 26.287 - 28.885
Nitrate (umol/L): 0.075 - 1.522
Salinity (PPS): 32.019 - 34.799
Oxygen (ml/l): 4.130 - 4.582
Phosphate (umol/l): 0.130 - 0.415
Silicate (umol/l): 3.106 - 6.058
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Depth: 2 - 30m.
From 2 to 30 meters.
Habitat: reef-associated.
From 2 to 30 meters.
Habitat: reef-associated.
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Environment
reef-associated; marine; depth range 2 - 30 m (Ref. 9710)
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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)
http://www.fishbase.org/references/FBRefSummary.php?id=9710&speccode=13770
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Trophic Strategy
Occurs inshore (Ref. 75154).
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Masuda, H. and G.R. Allen 1993 Meeresfische der Welt - Groß-Indopazifische Region. Tetra Verlag, Herrenteich, Melle. 528 p. (Ref. 9137)
http://www.fishbase.org/references/FBRefSummary.php?id=9137&speccode=4599
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Molecular Biology and Genetics
Molecular Biology
Statistics of barcoding coverage: Lutjanus decussatus
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Species: 5
Species With Barcodes: 1
Public Records: 0
Species: 5
Species With Barcodes: 1
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Conservation
Conservation Status
IUCN Red List Assessment
Red List Category
LC
Least Concern
Red List Criteria
Version
3.1
Year Assessed
2010
Assessor/s
Curtis-Quick, J.
Reviewer/s
Collen, B., Richman, N., Beresford, A., Chenery, A. & Ram, M.
Contributor/s
De Silva, R., Milligan, H., Lutz, M., Batchelor, A., Jopling, B., Kemp, K., Lewis, S., Lintott, P., Sears, J., Wilson, P., Smith, J. and Livingston, F.
Justification
Lutjanus decussatus has been assessed as Least Concern. This broadly distributed species is harvested as a food source, but this is a subsistence scale fishery, and there is no indication that stocks are being over-exploited. This species is not considered to be impacted by any major threatening processes at present.
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Trends
Population
Population
Population Trend
There is no population information available for Lutjanus decussatus.
Population Trend
Decreasing
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Threats
Threats
Major Threats
Lutjanus decussatus is of minor commercial importance, due to its small size. It is caught by subsistence fishers using handlines, traps and gill nets. This species is mostly marketed fresh (FAO 2002). It is also taken for the aquarium trade, but in very low numbers. In Indonesia numbers have fallen over the last eight years, and fishing pressures, particularly fish fences, have increased (J. Curtis-Quick pers. comm. 2009).
Due to the coastal nature of this species, it may also be impacted by coastal development and pollution. However, this is a localised threat, and not known across the species' entire range.
Due to the coastal nature of this species, it may also be impacted by coastal development and pollution. However, this is a localised threat, and not known across the species' entire range.
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Least Concern (LC)
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IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
http://www.fishbase.org/references/FBRefSummary.php?id=57073
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Management
Conservation Actions
Conservation Actions
There are no species-specific conservation measures in place for Lutjanus decussatus, however the distribution of this species may coincide with a number of designated marine protected areas. Further research on population, harvest levels, and threats is recommended; as well as monitoring of fisheries data and harvest for the aquarium trade to ensure the population is not suffering significant declines.
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Relevance to Humans and Ecosystems
Benefits
Importance
fisheries: commercial; aquarium: commercial
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Coppola, S.R., W. Fischer, L. Garibaldi, N. Scialabba and K.E. Carpenter 1994 SPECIESDAB: Global species database for fishery purposes. User's manual. FAO Computerized Information Series (Fisheries). No. 9. Rome, FAO. 103 p. (Ref. 171)
http://www.fishbase.org/references/FBRefSummary.php?id=171&speccode=2534
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Jonklaas, R. 1975 Collecting marine tropicals. T.F.H. Publications, Neptune City, USA. 224 p. (Ref. 10361)
http://www.fishbase.org/references/FBRefSummary.php?id=10361&speccode=9
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