Overview

Comprehensive Description

Biology

Found in peats and secondary peat forest streams (Ref. 57235). Common in forest streams and clear black waters (Ref. 56749). Occurs at midwater levels to surface in shallow sluggish and standing waters, marshes and swamps, usually under forest canopies. Appears to prefer soft acidic water that is often tannin-stained. Found in small openings of generally dense vegetation. Feeds on zooplankton and some insects. Not seen in markets, but popular in aquarium trade (Ref. 12693).
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Distribution

Range Description

The species is known from the lower Mekong basin in Viet Nam (the lower Delta), in eastern Thailand to the Cardamom drainages in Cambodia, and from the Malay Peninsula and Indonesia (Sumatra and Kalimantan), where its main population centres seem to be. In Peninsular Malaysia it's widely-distributed and has been collected in Perak, Terengganu, Pahang and Johor states. Records from Singapore and Sumatra are limited. On Borneo the majority of collections have occurred from the Kapuas River basin (Kalimantan), with records from Sarawak and Brunei Darussalam (the Belait and Ingei Rivers).
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Asia: Thailand, Cambodia (Ref. 7050), Malay Peninsula to Indonesia (Ref. 36654).
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Asia.
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Physical Description

Size

Maximum size: 70 mm TL
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Max. size

7.0 cm TL (male/unsexed; (Ref. 1672))
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Diagnostic Description

Lateral line incomplete; height of dorsal fin greater than body depth; body very slender with long fins (Ref. 12693).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Inhabits lowland forested streams, peatswamps, with clear organic water and thick leaf litter. Prefers soft, acidic, tannin-stained water. Found in marshes and swamps, under forest canopies.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater; pH range: 5.0 - 6.0; dH range: 5 - 12
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Diseases and Parasites

Nematode Infestation. Parasitic infestations (protozoa, worms, etc.)
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Bacterial Infections (general). Bacterial diseases
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Rasbora pauciperforata

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.

GGCACCCTTTATCTCGTATTCGGTGCCTGAGCCGGAATAGTTGGAACCGCCCTT---AGTCTTCTTATTCGTGCTGAACTTAACCAACCAGGATCTCTTTTAGGAGAT---GATCAAATTTATAATGTAATCGTAACTGCTCATGCTTTTGTAATAATTTTCTTTATAGTTATACCAATACTGATCGGAGGATTTGGGAACTGACTGGTTCCACTTATA---ATCGGGGCACCAGACATAGCATTCCCACGAATAAATAACATAAGCTTTTGACTCCTTCCCCCCTCATTTTTACTACTATTAGCTTCTTCCGGTGTTGAAGCTGGGGCTGGGACAGGATGAACAGTATACCCGCCACTTGCAAGCAATCTTGCCCACGCAGGAGCATCAGTTGATTTA---ACAATTTTCTCACTTCACCTAGCAGGTGTCTCATCAATTCTGGGGGCTATTAATTTTATTACAACAATTATTAATATGAAACCCTCAATTGCCACCCAATATCAAACCCCACTATTTGTATGAGCAGTATTAGTTACAGCTGTTCTTTTACTCCTATCACTACCAGTTTTAGCTGCC---GGAATTACAATACTTCTTACAGACCGAAACCTTAACACCTCATTCTTTGACCCAGCCGGAGGAGGTGACCCAATTTTATATCAACACCTATTCTGATTCTTT
-- end --

Download FASTA File

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Statistics of barcoding coverage: Rasbora pauciperforata

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 5
Specimens with Barcodes: 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
2012

Assessor/s
Vidthayanon, C.

Reviewer/s
Smith, K. & Allen, D.

Contributor/s
Fisher, J.

Justification
Assessed as Least Concern due to its population trend still stable and the lack of any known major widespread threats.
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Population

Population
Locally common, uncommon in Cambodia and Viet Nam.

Population Trend
Stable
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Threats

Major Threats
Across much of Southeast Asia the species lowland habitats are under threat from rubber/palm oil plantations, building developments and other human activities.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
None required.
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Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: commercial
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