Extensive chromosomal homologies and evidence of karyotypic stasis in Atlantic grunts of the genus Haemulon (Perciformes)

► Haemulidae fishes have high chromosomal conservatism. ► Karyotype conservatism may be associated with cytogenetic analysis of low resolution. ► New cytogenetic approaches suggest high content syntenic evolutionarily maintained. ► Pre-zygotic barriers maybe ensure the genetic cohesion of these species.