General information
Hasemania nana (Lütken, 1875)  
   
Common nameSilvertip tetra, Piaba
Synonyms
-
IUCN Red List status (2014)
Not Reported
Habitat
Freshwater
Systematics
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Characiformes; Characidae.
Geographical distribution Brazil
Occurrence native: Brazil
Remarks
Karyological information
Geographical area of study Lake at the margins of the Sao Francisco River (Tres Marias, MG, Brazil)
Source of chromosomes Kidney
Number of specimens with sex 17(08 males, 09 females)
Diploid chromosome number 50
Karyotype formula 8m+42sm
Fundamental arm number 100
Chromosome length Not reported
Sex chromosome Not reported
Chromosome staining/banding/FISH Constitutive heterochromatin was detected in few chromosomes in pericentromeric region. Ag-NORs were located in a terminal position on short arm of submetacentric pair no. 7, adjacent to a heterochromatic region.
Reference Moreira PWA, Bertollo LAC, Moreira-Filho O (2007). Comparative cytogenetics between three Characidae fish species from the Sao Francisco river basin. Caryologia, 60(1-2): 64-68.
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