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Intraspecific Variation in Morphology and Sexual Dimorphism in Puntius singhala (Teleostei: Cyprinidae)
Ceylon Journal of Science (Biological Sciences)
Intraspecific morphological variation and differentiation among six populations of the endemic freshwater fish Puntius singhala (Cyprinidae) were investigated. There is significant sexual dimorphism in three morphometric characters (pectoral-fin length, caudal-peduncle length, and length of dorsal-fin base), where males have slightly longer measures than females, indicating adaptive significance related to dispersal. Significant heterogeneity and differentiation was found only among some of thedoi:10.4038/cjsbs.v37i2.504 fatcat:t5cpp6oyqjh7vmte2oqoihf2da