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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Distribution

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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Asia: Chao Phraya and Mekong basins. Rare throughout its range (Ref. 10418). Reported from Maeklong River (Ref. 26336).
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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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Size

Max. size

24.0 cm SL (male/unsexed; (Ref. 30857))
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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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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
M. bocourti is a demersal and potamodromous species which occurs in medium to large-sized rivers.

Systems
  • Freshwater
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Environment

demersal; potamodromous (Ref. 51243); freshwater; pH range: 6.5 - 7.2; dH range: 10 - 20
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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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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.

GTATTTGGTGCCTGAGCCGGAATAGTTGGTACAGCCCTT---AGCTTACTAATCCGGGCAGAACTAGCCCAACCCGGCGCTCTTCTAGGGGAT---GATCAAATTTACAATGTTATTGTAACTGCTCATGCCTTCATCATAATTTTCTTTATAGTAATGCCAATTATAATTGGAGGCTTCGGAAACTGACTTATTCCACTAATA---ATCGGAGCACCAGATATGGCTTTCCCACGAATAAATAATATAAGCTTTTGACTGCTCCCTCCCTCTTTCCTACTTCTACTAGCTTCCTCCGGTGTTGAAGCCGGCGCAGGCACTGGATGAACTGTTTATCCACCCCTTGCTGGTAACCTTGCACATGCTGGAGCTTCAGTAGACCTA---ACCATTTTCTCCCTACATCTCGCAGGAGTATCATCCATTCTTGGGGCCATTAACTTTATTACAACCATTATTAACATAAAACCACCAGCTATCTCCCAATACCAAACCCCATTATTTGTATGAGCCGTATTAATTACAGCTGTTCTACTACTATTATCACTTCCTGTTCTAGCCGCC---GGCATCACAATGTTATTAACAGATCGAAATCTTAACACCACATTCTTTGACCCGGCGGGAGGGGGAGACCCA
-- 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
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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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Population

Population
M. bocourti is rare throughout its range (Froese and Pauly 2006)

Population Trend
Decreasing
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Threats

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.
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Vulnerable (VU) (A2ce)
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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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