KARYOTYPIC ANALYSIS OF DEVARIO AEQUIPINNATUS (MCCLELLAND, 1839) FROM GAD ANA RIVER SOUTH INDIA WITHNOR BANDING AND C-BANDING

摘要

Devario aequipinnatus is an aquarium fish. The wider distribution of Devario aequipinnatus throughout Asia is due to the existence of intraspecific variation in its germplasm in the form of chromosomes. The diploid chromosomal number 2n=50 with 14m+llsm+15st+10t chromosomes and the fundamental arm number NF=90. A pair of heteromorphic marker chromosome is present. There are two pairs of NOR bearing chromosomes. In C-banding all chromosomes having centromeric region of constitutive heterochromatin.