Abstract
SUMMARYTwo Perciformes species (Orthopristis ruber and Scartella cristata) occurring along the southeastern coast of Brazil (Guanabara Bay, RJ) were analyzed cytogenetically by standard techniques, by silver nitrate staining and by C-banding. The results obtained in the present study confirm the karyotypic stability observed among Perciformes since both species present a diploid complement consisting of 48 chromosomes. The two species presented similar C-banding patterns revealing constitutive heterochromatin blocks in centromeric and telomeric positions in most chromosomes in the complement. S. cristata showed the presence of a NOR pair located subterminally in one of the largest subtelocentric pairs. The results obtained for O. ruber about this feature were not satisfactory.
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