Table of Contents
Overview
Comprehensive Description
Biology
Occur in medium to large-sized rivers (Ref. 12975). Adults feed on crustaceans and benthic invertebrates. Oviparous, distinct pairing possibly like other members of the same family (Ref. 205). Usually marketed fresh (Ref. 12693).
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Roberts, T.R. 1994 Systematic revision of Asian bagrid catfishes of the genus Mystus sensu stricto, with a new species from Thailand and Cambodia. Ichthyol. Explor. Freshwat. 5(3):241-256. (Ref. 10418)
http://www.fishbase.org/references/FBRefSummary.php?id=10418&speccode=5140
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Distribution
Asia: Chao Phraya and Mekong basins. Rare throughout its range (Ref. 10418). Reported from Maeklong River (Ref. 26336).
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Roberts, T.R. 1994 Systematic revision of Asian bagrid catfishes of the genus Mystus sensu stricto, with a new species from Thailand and Cambodia. Ichthyol. Explor. Freshwat. 5(3):241-256. (Ref. 10418)
http://www.fishbase.org/references/FBRefSummary.php?id=10418&speccode=5140
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Range Description
M. bocourti is found in the Chao Phraya and Mekong basins, in Cambodia, Lao PDR, Thailand and Viet Nam.
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Mekong and Chao Phraya River basins: Thailand. Laos and Cambodia.
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Physical Description
Morphology
Dorsal spines (total): 2; Dorsal soft rays (total): 7; Analsoft rays: 10; Vertebrae: 43
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Roberts, T.R. 1994 Systematic revision of Asian bagrid catfishes of the genus Mystus sensu stricto, with a new species from Thailand and Cambodia. Ichthyol. Explor. Freshwat. 5(3):241-256. (Ref. 10418)
http://www.fishbase.org/references/FBRefSummary.php?id=10418&speccode=5140
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Size
Max. size
24.0 cm SL (male/unsexed; (Ref. 30857))
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Baird, I.G., V. Inthaphaisy, P. Kisouvannalath, B. Phylavanh and B. Mounsouphom 1999 The fishes of southern Lao. Lao Community Fisheries and Dolphin Protection Project. Ministry of Agriculture and Forestry, Lao PDR.161 p. (Ref. 30857)
http://www.fishbase.org/references/FBRefSummary.php?id=30857&speccode=52537
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Diagnostic Description
Distinguished from all other Mystus (indeed, from all other Asian Bagridae except Bagrichthys hypselopterus) by its extraordinary high dorsal fin, involving great elongation of the non-serrate dorsal fin spine and first three or four soft rays. Within Mystus sensu stricto, mouth relatively narrow (Ref. 10418).
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Roberts, T.R. 1994 Systematic revision of Asian bagrid catfishes of the genus Mystus sensu stricto, with a new species from Thailand and Cambodia. Ichthyol. Explor. Freshwat. 5(3):241-256. (Ref. 10418)
http://www.fishbase.org/references/FBRefSummary.php?id=10418&speccode=5140
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Ecology
Habitat
Environment
demersal; potamodromous (Ref. 51243); freshwater; pH range: 6.5 - 7.2; dH range: 10 - 20
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Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243)
http://www.fishbase.org/references/FBRefSummary.php?id=51243&speccode=4683
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Habitat and Ecology
Habitat and Ecology
Systems
M. bocourti is a demersal and potamodromous species which occurs in medium to large-sized rivers.
Systems
- Freshwater
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Migration
Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km.
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Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243)
http://www.fishbase.org/references/FBRefSummary.php?id=51243&speccode=4683
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Molecular Biology and Genetics
Molecular Biology
Barcode data: Mystus bocourti
The following is a representative barcode sequence, the centroid of all available sequences for this species.
There is 1 barcode sequence available from BOLD and GenBank. Below is the 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. Other sequences that do not yet meet barcode criteria may also be available.
Download FASTA File
There is 1 barcode sequence available from BOLD and GenBank. Below is the 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. Other sequences that do not yet meet barcode criteria may also be available.
GTATTTGGTGCCTGAGCCGGAATAGTTGGTACAGCCCTT---AGCTTACTAATCCGGGCAGAACTAGCCCAACCCGGCGCTCTTCTAGGGGAT---GATCAAATTTACAATGTTATTGTAACTGCTCATGCCTTCATCATAATTTTCTTTATAGTAATGCCAATTATAATTGGAGGCTTCGGAAACTGACTTATTCCACTAATA---ATCGGAGCACCAGATATGGCTTTCCCACGAATAAATAATATAAGCTTTTGACTGCTCCCTCCCTCTTTCCTACTTCTACTAGCTTCCTCCGGTGTTGAAGCCGGCGCAGGCACTGGATGAACTGTTTATCCACCCCTTGCTGGTAACCTTGCACATGCTGGAGCTTCAGTAGACCTA---ACCATTTTCTCCCTACATCTCGCAGGAGTATCATCCATTCTTGGGGCCATTAACTTTATTACAACCATTATTAACATAAAACCACCAGCTATCTCCCAATACCAAACCCCATTATTTGTATGAGCCGTATTAATTACAGCTGTTCTACTACTATTATCACTTCCTGTTCTAGCCGCC---GGCATCACAATGTTATTAACAGATCGAAATCTTAACACCACATTCTTTGACCCGGCGGGAGGGGGAGACCCA
-- end --
-- end --
Download FASTA File
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Statistics of barcoding coverage: Mystus bocourti
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 2
Species With Barcodes: 1
Public Records: 2
Specimens with Barcodes: 2
Species With Barcodes: 1
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Conservation
Conservation Status
IUCN Red List Assessment
Red List Category
VU
Vulnerable
Red List Criteria
A2ce
Version
3.1
Year Assessed
2009
Assessor/s
Jenkins, A., Kullander, F.F. & Tan, H.H.
Reviewer/s
Collen, B., Darwall, W., Ram, M. & Smith, K. (SRLI Freshwater Fish Evaluation Workshop)
Contributor/s
Justification
M. bocourti has been assessed as Vulnerable because of an inferred population decrease of more than 30% in the past ten years. This is as a result of high levels of pollution and hydrological alterations, including dams, in both the Chao Phraya and Mekong river basins.
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Trends
Population
Population
Population Trend
M. bocourti is rare throughout its range (Froese and Pauly 2006)
Population Trend
Decreasing
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Threats
Vulnerable (VU) (A2ce)
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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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Major Threats
The waters of the Chao Phraya basin, particularly the rivers of the lower basin, are heavily polluted; a UNESCO report (2006) states that 'the Chao Phraya River exhibited serious organic and bacterial pollution that was a threat to many species of aquatic life.' There are also reports of reduced water quality in the Mekong River basin.
There are a number of large dams and other water diversion projects which are an additional threat to M. bocourti in both the Chao Phraya and Mekong basins; effects of developments such as these to the freshwater ecosystem include alterations to the hydrological cycle, and changes to the levels of sedimentation and dissolved o². Dams also act as a physical barrier, which is especially pertinent to M. bocourti, a potamodromous species. More dams are currently under construction and planned for the future.
Water from both the Chao Phraya and Mekong Rivers is used for agricultural irrigation and to supply urbanised areas, causing further disruption to the natural hydrological cycle.
There are a number of large dams and other water diversion projects which are an additional threat to M. bocourti in both the Chao Phraya and Mekong basins; effects of developments such as these to the freshwater ecosystem include alterations to the hydrological cycle, and changes to the levels of sedimentation and dissolved o². Dams also act as a physical barrier, which is especially pertinent to M. bocourti, a potamodromous species. More dams are currently under construction and planned for the future.
Water from both the Chao Phraya and Mekong Rivers is used for agricultural irrigation and to supply urbanised areas, causing further disruption to the natural hydrological cycle.
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Management
Conservation Actions
Conservation Actions
There are no conservation measures currently known to be in action at habitat or species level.
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