| General information |
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Colisa lalius (Hamilton, 1822) |
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| Common name | Dwarf gourami, Gowra |
| Valid name |
Trichogaster lalius (Hamilton, 1822) |
| Synonyms |
Trichopodus lalius Hamilton, 1822 Polyacanthus lalius (Hamilton, 1822) Colisa lalia (Hamilton, 1822) Colisha lalius (Hamilton, 1822) Colisa unicolor Cuvier, 1831 |
| IUCN Red List status (2014) |
Least Concern (LC) |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata; Anabantomorpharia; Anabantiformes; Osphronemidae. |
| Geographical distribution |
India; Bangladesh; Pakistan; Singapore; Taiwan; Myanmar; Nepal; USA; Colombia |
| Occurrence |
native: India; native: Bangladesh; native: Pakistan; introduced: Singapore; introduced: Taiwan; questionable: Myanmar; questionable: Nepal; introduced: USA; introduced: Colombia |
| Importance |
Food/ornamental |
| Karyological information |
| Record 1 |
| Geographical area of study |
Bankura, West Bengal, India |
| Source of chromosomes |
Gill, Kidney and Testis |
| Number of specimens with sex |
10 |
| Diploid chromosome number |
46 |
| Karyotype formula |
14m+10sm+10st+2t+10T |
| Fundamental arm number |
|
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Nil |
| Reference |
Khuda Bukhsh AR, Chattopadhyay GK, Das SK (1981). Karyomorphology of Two Species of Freshwater Fishes Chanda (Ambasis) nama (Fam.: Centropomidae) and Trichogaster lalius (Fam.: Osphronemidae) In: Perspectives in Cytology and Genetics (Eds. G.K. Manna and U. Sinha) Hiadasia Publishers, New delhi, 3: 141-144. |
| Karyotype /Metaphase complement image |
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| Record 2 |
| Geographical area of study |
Ditches and ponds near Kurukshetra University, Haryana, India. |
| Source of chromosomes |
Gills and kidneys. |
| Number of specimens with sex |
18 (10 male, 8 female) |
| Diploid chromosome number |
46 |
| Karyotype formula |
14m+ 6sm+25a (male), 14m+6sm+26a (female) |
| Fundamental arm number |
64 |
| Chromosome length |
- |
| Sex chromosome |
Showed XX/XO type sex chromsome mechanism. |
| Chromosome staining/banding/FISH |
- |
| Reference |
Rishi S, Gill PK, Rishi KK (1997). Karyotypic studies in eight species of fishes belonging to family Belontidae (Pisces Perciformes). Chromosome Science, 1: 55-59. |
| Cross Link |