| General information |
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Ctenops nobilis (McClelland, 1845) |
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| Common name | Frail gourami, Indian paradisefish |
| Synonyms |
- |
| IUCN Red List status (2014) |
Near Threatened (NT) |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata; Anabantomorpharia; Anabantiformes; Osphronemidae. |
| Geographical distribution |
India; Bangladesh; Nepal |
| Occurrence |
native: India; native: Bangladesh; questionable: Nepal |
| Remarks |
- |
| Karyological information |
| Record 1 |
| Geographical area of study |
Delhi and Yamuna Nagar, India. |
| Source of chromosomes |
Gills and kidneys. |
| Number of specimens with sex |
13 (5 male, 8 female) |
| Diploid chromosome number |
44 |
| Karyotype formula |
8m+8sm+28a |
| Fundamental arm number |
60 |
| Chromosome length |
- |
| Sex chromosome |
No morphologically distinguishable sex chromosomes. |
| 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. |
| Record 2 |
| Geographical area of study |
Manas River, Brahmaputra River drainage Assam, India. |
| Source of chromosomes |
Gill and kidney tissues. |
| Number of specimens with sex |
5 |
| Diploid chromosome number |
44 |
| Karyotype formula |
8m+20sm+10st+6t |
| Fundamental arm number |
72 |
| Chromosome length |
Ranged from 1.375 to 4.787 µm. |
| Sex chromosome |
- |
| Chromosome staining/banding/FISH |
Prominent single pair of AgNOR, CMA3 stained signals and 18S rDNA signals observed on p-arms of submetacentric 9th chromosome pair. |
| Reference |
Kushwaha B, Sarma D, Mech B, Kumar MS, Baisvar VS, Tiwari A, Choudhury H, Kumar R. (2022). Exploring fish miscellany from biodiversity hotspot region of Northeast India through chromosome profiling. Croatian Journal of Fisheries, 80: 179-188. |
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