| General information |
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Macrognathus aculeatum (Bloch, 1786) |
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| Common name | Lesser spiny eel, Gachi |
| Valid name |
Macrognathus aculeatus (Bloch, 1786) |
| Synonyms |
Ophidium aculeatum Bloch, 1786 Mastacembelus aculeatus (Bloch, 1786) Rhyncobdella aculeata (Bloch, 1786) Macrognathus aculeata (Bloch, 1786) Rhynchobdella aculeata Bloch, 1786 Rhynchobdella ocellata Cuvier, 1832 Ophidium aculeatum Bloch, 1786 Mastacembelus aculeatus (Bloch, 1786) Rhyncobdella aculeata (Bloch, 1786) Macrognathus aculeata (Bloch, 1786) Rhynchobdella aculeata Bloch, 1786 Rhynchobdella ocellata Cuvier, 1832 |
| IUCN Red List status (2014) |
Not Reported |
| Habitat |
Freshwater |
| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata; Anabantomorpharia; Synbranchiformes; Mastacembelidae. |
| Geographical distribution |
India; China; Indonesia; Bangladesh; Malaysia; Singapore; Thailand; Taiwan; South Korea; Vietnam; Myanmar; Laos; Nepal |
| Occurrence |
native: India; native: China; native: Indonesia; native: Bangladesh; native: Malaysia; native: Singapore; native: Thailand; native: Taiwan; native: South Korea; native: Vietnam; native: Myanmar; native: Laos; questionable: Nepal |
| Importance |
Food/ornamental |
| Remarks |
No heteromorphic pair(s) in karyotype. |
| Karyological information |
| Record 1 |
| Geographical area of study |
Jamshedpur, Bihar, India |
| Source of chromosomes |
Gill, Kidney and Testis |
| Number of specimens with sex |
5 |
| Diploid chromosome number |
48 |
| Karyotype formula |
8m+2sm+38T |
| Fundamental arm number |
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| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Nil |
| Reference |
Barat A (1985). A Study of Chromosomes in Some Indian Teleost (Pisces). Ph.D. Thesis, Kalyani University, West Bengal, India. |
| Karyotype /Metaphase complement image |
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| Record 2 |
| Geographical area of study |
Kalyani, West Bengal, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
48 |
| Karyotype formula |
8m+2sm+38t |
| Fundamental arm number |
|
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Nil |
| Reference |
Manna GK, Prasad R (1977). Chromosome Analysis in Five Species of Fresh Water Fishes. Nucleus, 20(3): 264-271. |
| Karyotype /Metaphase complement image |
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| Record 3 |
| Geographical area of study |
Kalyani, West Bengal, India |
| Source of chromosomes |
Kidney |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
48 |
| Karyotype formula |
10m+4sm+2st+32t |
| Fundamental arm number |
|
| Chromosome length |
Not reported |
| Sex chromosome |
Not detected |
| Chromosome staining/banding/FISH |
Nil |
| Reference |
Manna GK, Prasad R (1977). Chromosome Analysis in Five Species of Fresh Water Fishes. Nucleus, 20(3): 264-271. |
| Karyotype /Metaphase complement image |
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| Record 4 |
| Geographical area of study |
Freshwater, South eastcoast of India |
| Source of chromosomes |
Gill epithelium |
| Number of specimens with sex |
Not reported |
| Diploid chromosome number |
48 |
| Karyotype formula |
46m+2sm |
| Fundamental arm number |
|
| Chromosome length |
1.33 to 2.33 |
| Sex chromosome |
No heteromorphic pair(s) in karyotype. |
| Chromosome staining/banding/FISH |
Not reported |
| Reference |
Natarajan R, Subrahmanyam K (1974). A Karyotype Study of Some Teleosts from Portonovo Waters. Proceedings of the Indian Academy of Sciences - Section B79(5): 173-196. |
| Cross Link |