Overview

Comprehensive Description

[[ Genus Mystus Scopoli ]]

Mystus Scopoli, 1777 , is a diverse group of small- to medium-sized bagrid catfishes, from South Asia, with 23 of the 46 nominal species known from there (Talwar & Jhingran, 1991). Despite two previous studies (Jayaram, 1954; Jayaram & Anuradha Sanyal, 2003), the diversity and distribution of the group in South Asia is not well known. Phylogenetic relationships within the genus are also poorly understood, although Mo (1991) suggested there are two major lineages. Hardman (2005) recently confirmed the paraphyly of Mystus .

One group of species (considered Mystus s. str. by Roberts, 1994) can be easily distinguished from other congeners in having a very long adipose-fin base that spans almost the entire postdorsal distance. This group (hereafter referred to in the diagnoses as “congeners with a long-based adipose fin”), known from West, South and Southeast Asia, was revised by Roberts (1994), who considered the following eight species to be valid: M. pelusius (Solander, 1794) , M. cavasius (Hamilton, 1822) , M. singaringan (Bleeker, 1846) , M. bocourti (Bleeker, 1864) , M. bleekeri (Day, 1877) , M. rufescens (Vinciguerra, 1890) , M. rhegma Fowler, 1935 ZBK , and M. albolineatus Roberts, 1994 ZBK .

A considerable amount of variation in the number of rakers on the first gill arch has been observed in M. cavasius (see Roberts, 1994). We investigated patterns in this variation and recognize three distinct species, one of which is undescribed. Redescriptions of two of these species, Mystus cavasius and M. seengtee , from northern and southern India respectively, and the description of a new species, Mystus falcarius ZBK , from Myanmar form the basis of this study.

  • Prosanta Chakrabarty, Heok Hee Ng (2005): The identity of catfishes identified as Mystus cavasius (Hamilton, 1822) (Teleostei: Bagridae), with a description of a new species from Myanmar. Zootaxa 1093, 1-24: 1-2, URL:http://www.zoobank.org/urn:lsid:zoobank.org:pub:DB753251-D58A-4B39-97EC-E852098135FF
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Ecology

Habitat

Depth range based on 2 specimens in 9 taxa.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 1 - 1.2
  Temperature range (°C): 28.885 - 28.885
  Nitrate (umol/L): 0.075 - 0.075
  Salinity (PPS): 32.200 - 32.200
  Oxygen (ml/l): 4.427 - 4.427
  Phosphate (umol/l): 0.339 - 0.339
  Silicate (umol/l): 4.465 - 4.465

Graphical representation

Depth range (m): 1 - 1.2
 
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
Specimen Records: 190
Specimens with Sequences: 159
Specimens with Barcodes: 139
Species: 19
Species With Barcodes: 18
Public Records: 84
Public Species: 17
Public BINs: 18
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Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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Wikipedia

Mystus

Mystus is a genus of small to medium-sized bagrid catfishes that occur in South and Southeast Asia.[1]

Mystus is poorly diagnosed. Macrones had previously been used by earlier authors, but this generic name was preoccupied in Coleoptera.[2] Phylogenetic relationships within this genus are poorly understood, though it has been suggested that there are two major lineages.[3] It was confirmed in 2005 that this genus is paraphyletic.[3]

There are two fossil species assigned to this genus both from the early Tertiary of the Sanshui Basin in Guangdong, China:

Species[edit]

There are currently 45 extant species in this genus:[4][5][6][7]

References[edit]

  1. ^ a b Ng, Heok Hee; Buth, D. G. (2003). "Mystus impluviatus: A New Species of Bagrid Catfish (Teleostei: Bagridae) from Eastern Borneo". In Buth, D. G. Copeia 2003 (2): 373–378. doi:10.1643/0045-8511(2003)003[0373:MIANSO]2.0.CO;2. 
  2. ^ a b Ng, Heok Hee (2002). "The identity of Mystus nigriceps (Valenciennes in Cuvier & Valenciennes, 1840), with the Description of a New Bagrid Catfish (Teleostei: Siluriformes) from Southeast Asia" (PDF). The Raffles Bulletin of Zoology 50 (1): 161–168. 
  3. ^ a b c Chakrabarty, Prosanta; Ng, Heok Hee (2005). "The identity of catfishes identified as Mystus cavasius (Hamilton, 1822) (Teleostei: Bagridae), with a description of a new species from Myanmar" (PDF). Zootaxa 1093: 1–24. 
  4. ^ Froese, Rainer, and Daniel Pauly, eds. (2013). Species of Mystus in FishBase. August 2013 version.
  5. ^ a b c Plamoottil, M. & Abraham, N.P. (2013): Mystus indicus and M. heoki, two new catfishes from Kerala, India. Biosystematica, 7 (1): 43-58.
  6. ^ a b Plamoottil, M. & Abraham, N.P. (2013): Mystus menoni, a new fish species from Kerala, India. International Journal of Pure and Applied Zoology, 1 (4): 315-325.
  7. ^ a b Ng, H.H. & Pethiyagoda, R. (2013): Mystus zeylanicus, a new species of bagrid catfish from Sri Lanka (Teleostei: Bagridae). Ichthyological Exploration of Freshwaters, 24 (2): 161-170.
  8. ^ Ng, Heok Hee; Hadiaty, Renny K. (March 2005). "Two new bagrid catfishes (Teleostei: Bagridae) from the Alas River drainage, northern Sumatra". Ichthyol. Explor. Freshwaters 16 (1): 83–92. 
  9. ^ Darshan, A., Vishwanath, W., Mahanta, P.C. & Barat, A. (2011): Mystus ngasep, a new catfish species (Teleostei: Bagridae) from the headwaters of Chindwin drainage in Manipur, India. Journal of Threatened Taxa, 3 (11): 2177–2183.
  10. ^ Ng, Heok Hee; Wirjoatmodjo, Soetikno; Hadiaty, Renny K. (2001). "Mystus punctifer, a New Species of Bagrid Catfish (Teleostei: Siluriformes) from Northern Sumatra" (PDF). The Raffles Bulletin of Zoology 49 (2): 355–358. 
  11. ^ Ng, H.H. (2012): Mystus velifer, a new species of catfish from Indochina (Teleostei: Bagridae). Zootaxa, 3398: 58–68.
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