| General information |
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Clarias batrachus (Linnaeus, 1758) |
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| Common name | Philippine catfish, Mangur, Indian catfish |
| Synonyms |
Silurus batrachus Linnaeus, 1758 Clarias betrachus (Linnaeus, 1758) Clarius bartrachus (Linnaeus, 1758) Clarias punctatus Valenciennes, 1840 Clarias assamensis Day, 1877 Macropteronotus magur (non Hamilton, 1822) |
| IUCN Red List status (2014) |
Least Concern (LC) |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Clariidae. |
| Geographical distribution |
India; China; Japan; Indonesia; Bangladesh; Malaysia; Sri Lanka; Pakistan; Philippines; Singapore; Thailand; Taiwan; Vietnam; Myanmar; Laos; Cambodia; Nepal; Papua New Guinea; USA; Guam |
| Occurrence |
misidentification: India; introduced: China; introduced: Japan; native: Indonesia; misidentification: Bangladesh; misidentification: Malaysia; misidentification: Sri Lanka; misidentification: Pakistan; introduced: Philippines; misidentification: Singapore; misidentification: Thailand; introduced: Taiwan; misidentification: Vietnam; misidentification: Myanmar; misidentification: Laos; misidentification: Cambodia; misidentification: Nepal; introduced: Papua New Guinea; introduced: USA; introduced: Guam |
| Importance |
Food/ornamental |
| Remarks |
Move across land using its stiff pectoral spines and have special mucous-producing pores on its body to help walking |
| Karyological information |
| Record 1 |
| Geographical area of study |
Kalyani, West Bengal, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
50 |
| Karyotype formula |
18m+20sm+8st+4t |
| Fundamental arm number |
|
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Nil |
| Reference |
Prasad R (1971). Ph.D. Thesis, Kalyani University, Kalyani, West Bengal, India. |
| Karyotype /Metaphase complement image |
|
| Record 2 |
| Geographical area of study |
Lucknow, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
15 |
| Diploid chromosome number |
50 |
| Karyotype formula |
12m+18sm+10st+10t |
| Fundamental arm number |
|
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
NORs sites on 1 chromosome pairs and C-band sites on 7 chromosome pairs |
| Reference |
Nagpure NS, Kushwaha B, Srivastava SK, Ponniah AG (2000). Comparative Karyomorphology of African catfish Clarias gariepinus (Burchell) and Asian catfish Clarias batrachus (Linn.). Chromosome science, 4: 57-59. |
| Karyotype /Metaphase complement image |
|
| Record 3 |
| Geographical area of study |
River Jumna and its adioining tributaries near Delhi, India |
| Source of chromosomes |
Testicular material |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
52 |
| Karyotype formula |
Not reported |
| Fundamental arm number |
Not reported |
| Chromosome length |
Not reported |
| Sex chromosome |
Not reported |
| Chromosome staining/banding/FISH |
Not reported |
| Reference |
Nayyar RP(1966). Karyotype studies in thirteen species of fishes. Genetica, 37:78-92. |
| Record 4 |
| Geographical area of study |
Pahang River, Malaysia. |
| Source of chromosomes |
Gills tissues. |
| Number of specimens with sex |
18 |
| Diploid chromosome number |
54 |
| Karyotype formula |
11m+7sm+2st+34a |
| Fundamental arm number |
74 |
| Chromosome length |
- |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
- |
| Reference |
Siraj SS, Sukardi R, Imm CCP, Mei KH, Vellasamy S, Panandam JM, Daud SK (2009). Chromosome analysis of walking catfish, Clarias spp. Malays. Appl. Biol., 38(1): 61-64. |
| Record 5 |
| Geographical area of study |
River basins of Thailand |
| Source of chromosomes |
Anterior Kidney |
| Number of specimens with sex |
16 (8 males and 8 females) |
| Diploid chromosome number |
104 |
| Karyotype formula |
2 m+ 4 sm + 98 st/a |
| Fundamental arm number |
110 |
| Chromosome length |
|
| Sex chromosome |
|
| Chromosome staining/banding/FISH |
The 18S rDNA sites were found to be localised on six chromosomal pairs and 5S rDNA sites were found on 27 chromosomal pairs |
| Reference |
Maneechot N, Yano CF, Bertollo LAC, Getlekha N, Molina WF, Ditcharoen S, Tengjaroenkul B, Supiwong W, Tanomtong A, Cioffi MB (2016). Genomic organization of repetitive DNAs highlights chromosomal evolution in the genus Clarias (Clariidae, Siluriformes. Molecular Cytogenetics 9:4, DOI 10.1186/s13039-016-0215-2 |
| Cross Link |