Ompok bimaculatus ';
General information
Ompok bimaculatus (Bloch, 1794)
 
 
Common nameButter catfish
Synonyms
Silurus bimaculatus Bloch, 1794
Callichrous bimaculatus (Bloch, 1794)
Pseudosilurus bimaculatus (Bloch, 1794)
Wallago bimaculatus (Bloch, 1794)
Ompak bimaculatus (Bloch, 1794)
Silurus chechra Hamilton, 1822
Callichrous chechra (Hamilton, 1822)
Silurus duda Hamilton, 1822
Silurus affinis Swainson, 1839
Callichrus affinis Swainson, 1839
IUCN Red List status (2014)
Near Threatened (NT)
Habitat
Freshwater
Systematics
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Siluridae.
Geographical distribution
India; Bangladesh; Sri Lanka; Pakistan; Myanmar; Nepal; Afghanistan
Occurrence Native: India, Bangladesh, Sri Lanka, Pakistan, Myanmar, Nepal, Afghanistan
Importance
Food/ornamental
Remarks
Nil
Karyological information
Geographical area of study Chi basin, Maha Sarakham Province, Northeast Thailand
Source of chromosomes
Kidney cells
Number of specimens with sex
10 (05 males;05 females)
Diploid chromosome number
50
Karyotype formula
14m+20sm+6a+10t
Fundamental arm number
90
Chromosome length
Not reported
Sex chromosome
Not reported
Chromosome staining/banding/FISH
The region adjacent to telomere of the short arm of submetacentric chromosome pair 4 showed clearly observable NORs
Reference(s)
Gomonteir B, Tanomtong A, Supiwong W, Sikhruadong S, Neeratanaphan L, Sanoamuang L (2012). Standardized karyotype and idiogram of two-spot glass catfish, Ompok bimaculatus (Siluriformes, Siluridae) in Thailand by conventional and Ag-NOR staining techniques. Cytologia, 77(4): 459-464.