Overview
Comprehensive Description
Biology
Found in ditches, canals, ponds. Occurs at the surface in habitats with dense growth of aquatic plants. Feeds on small crustaceans, insects and protozoans (Ref. 12693). Non-annual breeder. Is very difficult to maintain in aquarium (Ref. 27139). Not seen in markets (Ref. 12693).
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Roberts, T.R. 1998 Systematic observations on tropical Asian medakas or ricefishes of the genus Oryzias, with descriptions of four new species. Ichthyol. Res. 45(3):213-224. (Ref. 27658)
http://www.fishbase.org/references/FBRefSummary.php?id=27658&speccode=12254
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Distribution
Asia: Indonesia, Singapore, Malaysia, Thailand (Ref. 27658). Recorded from the Mekong (Ref. 12693).
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Roberts, T.R. 1998 Systematic observations on tropical Asian medakas or ricefishes of the genus Oryzias, with descriptions of four new species. Ichthyol. Res. 45(3):213-224. (Ref. 27658)
http://www.fishbase.org/references/FBRefSummary.php?id=27658&speccode=12254
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Physical Description
Morphology
Dorsal soft rays (total): 6 - 7; Analsoft rays: 20 - 25; Vertebrae: 28 - 29
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Roberts, T.R. 1998 Systematic observations on tropical Asian medakas or ricefishes of the genus Oryzias, with descriptions of four new species. Ichthyol. Res. 45(3):213-224. (Ref. 27658)
http://www.fishbase.org/references/FBRefSummary.php?id=27658&speccode=12254
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FishBase
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Size
Max. size
4.5 cm TL (male/unsexed; (Ref. 31267))
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Seegers, L. 1997 Killifishes of the world: Old world killis I: (Aphyosemion, lampeyes, ricefishes). Aqualog, Verlag: A.C.S. Gmbh, Germany. 160 p. (Ref. 31267)
http://www.fishbase.org/references/FBRefSummary.php?id=31267&speccode=6261
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Diagnostic Description
Principal caudal fin rays 5/6.
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Roberts, T.R. 1998 Systematic observations on tropical Asian medakas or ricefishes of the genus Oryzias, with descriptions of four new species. Ichthyol. Res. 45(3):213-224. (Ref. 27658)
http://www.fishbase.org/references/FBRefSummary.php?id=27658&speccode=12254
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FishBase
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Ecology
Habitat
Environment
benthopelagic; non-migratory; freshwater; brackish; pH range: 7.5 - 8.5
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Life History and Behavior
Life Cycle
Female carries her eggs outside her body in a cluster, attached to the genital pore by filaments.
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Lim, K.K.P. and P.K.L. Ng 1990 The freshwater fishes of Singapore. Singapore Science Centre, Singapore. 160 p. (Ref. 13061)
http://www.fishbase.org/references/FBRefSummary.php?id=13061&speccode=12254
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Molecular Biology and Genetics
Molecular Biology
Barcode data: Oryzias javanicus
The following is a representative barcode sequence, the centroid of all available sequences for this species.
There are 2 barcode sequences available from BOLD and GenBank. Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species. See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
Download FASTA File
There are 2 barcode sequences available from BOLD and GenBank. Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species. See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
GBGC9645-09|AB498067|Oryzias javanicus| ACACGTTGATTTTTCTCGACTAATCATAAAGACATCGGCACCCTCTATTTAGTCTTCGGTGCCTGAGCAGGAATAGTAGGCACTGCTCTA---AGCCTGCTAATCCGAGCTGAGCTGAGTCAGCCCGGTTCCCTCCTGGGAGAC---GACCAGATTTATAATGTAATTGTTACCGCACATGCCTTTGTAATAATTTTCTTTATAGTTATGCCAATTATGATTGGAGGTTTTGGAAACTGACTAATCCCTTTAATG---ATCGGAGCCCCAGACATGGCCTTTCCACGAATAAATAATATGAGCTTCTGACTCCTCCCCCCTTCTTTTCTCCTTCTCTTAGCCTCCTCTGGCGTCGAAGCTGGGGCTGGGACTGGATGAACGGTTTATCCCCCACTAGCCGGAAACCTAGCCCATGCAGGGGCCTCTGTAGATTTA---ACTATTTTCTCCCTTCATCTGGCCGGGATCTCGTCAATTCTGGGAGCAATTAACTTTATTACTACCATCATTAACATGAAGCCTCCTGCAATCTCCCAGTACCAAACCCCTCTATTTGTTTGAGCCGTAATAATTACTGCTGTACTTCTACTTCTTTCCCTCCCCGTCCTGGCTGCA---GGAATTACGATGCTTTTAACTGACCGAAACCTTAACACCACATTCTTCGACCCCGCTGGAGGAGGAGACCCGATCCTTTATCAGCATCTATTTTGGTTTTTTGGCCATCCAGAAGTTTACATTCTAATCTTACCAGGCTTCGGTATAATCTCCCACATCGTCGCCTACTACTCAGGAAAAAAA---GAGCCTTTCGGCTACATGGGTATGGTTTGGGCTATAATAGCAATTGGCCTTCTAGGCTTTATTGTATGGGCCCATCACATATTTACTGTAGGGATAG
-- end --
-- end --
Download FASTA File
© Barcode of Life Data Systems
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Statistics of barcoding coverage: Oryzias javanicus
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Species: 2
Species With Barcodes: 1
Public Records: 2
Species: 2
Species With Barcodes: 1
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Conservation
Threats
Not Evaluated
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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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Relevance to Humans and Ecosystems
Benefits
Importance
fisheries: of no interest; aquarium: commercial
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Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott 1991 World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)
http://www.fishbase.org/references/FBRefSummary.php?id=4537&speccode=1255
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