General information |
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| Callichthys callichthys (Linnaeus, 1758) | ||
| Common name | Cascarudo, Tamuatá | |
| Synonyms |
Calichthys callichthys (Linnaeus, 1758) Callichthys asper Quoy & Gaimard, 1824 Cataphractus depressus Swainson, 1839 Callichthys depressus (Swainson, 1839) Callichthys asper Valenciennes, 1840 Callichthys caelatus Valenciennes, 1840 Callichthys laeviceps Valenciennes, 1840 Callichthys loricatus Gronow, 1854 Callichthys kneri Gill, 1858 Callichthys tamoata Bleeker, 1864 Callichthys affinis Gunther, 1864 Callichthys hemiphractus Hensel, 1868 Callichthys arcifer Hensel, 1868 Callichthys callichthys bolteni Hoedeman, 1952 Callichthys callichthys demararae Hoedeman, 1952 |
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| IUCN Red List status (2014) | Not Reported |
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| Habitat | Freshwater |
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| Systematics |
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Siluriformes; Callichthyidae. |
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| Geographical distribution | Brazil; Argentina; Colombia; Peru; Venezuela; Ecuador; Uruguay; Guyana; Suriname; French Guiana; Trinidad and Tobago |
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| Occurrence | Native: Brazil, Argentina, Colombia, Peru, Venezuela, Ecuador, Uruguay, Guyana, Suriname, French Guiana, Trinidad and Tobago |
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| Importance | Food/Ornamental |
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| Remarks | Nil |
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Karyological information |
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| Geographical area of study | Pedras River;Temporary lake, Contas River Basin, Bahia state, Brazil | |
| Source of chromosomes | Kidney |
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| Number of specimens with sex | 09 specimens (03 males; 04 females; 02 Juveniles) |
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| Diploid chromosome number | 54 |
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| Karyotype formula | 16m + 24sm + 6st + 8a |
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| Fundamental arm number | 100 |
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| Chromosome length | Not reported |
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| Sex chromosome | Not reported |
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| Chromosome staining/banding/FISH | Three active NORs per specimen (Pedras River), two active NORs per specimen (Temporary lake) with polymorhism in position, size and number; 18S rDNA FISH revealed multiple sites. |
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| Reference(s) |
Oliveira C, Almeida-Toledo LF, Mori L, Toledo-Filho SA (1993). Cytogenetic and DNA content in six genera of the family Callichthyidae (Pisces, Siluriformes). Caryologia ,46(2-3): 171-188. |
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