Abstract
Karyotypes of12species (in 9 genera, 5 subfamilies, 2 families) of Japanese gobioid fishes were examined.The ranges are44-50in diploid number and44-96 in arm number.The diploid numbers of33species and2subspecies including those that have already been reported, show no clear relationships at the subfamily level of the current classification, though they are well stabilized at generic level.Among genera examined, Odontobutis and Rhinogobius have the simplest karyotype, and Acanthogobius, Chasmichthys, Tridentiger, Chaenogobius, Boleophthalmus, Periophthalmusand Acentrogobius follow in due order.
