Morphometric variation of Periophthalmus waltoni Koumans, 1941(Teleostei: Gobiidae) in the Persian Gulf and Gulf of Oman

Morphometric variation of 154 specimens of periophthalmus waltoni from seven differentsites in the persian gulf and makran sea (gulf of oman) were analyzed based on tenmorphometric characters. canonical variate analysis of the sampling sites suggested apartial separation between the north-western sites and the central plus south-eastern sites.moving larvae were probably the main factor connecting p. waltoni populations fromdifferent sites and keeping them similar, morphologically and probably genetically. weconcluded that environmental factors could be the main explanation for morphologicaldifferences between p. waltoni specimens from different stations.