• Evolution and biogeography of the Indian genera of the family Ariidae

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    • Keywords


      Ariidae; phylogeny; interrelationship of Indian genera

    • Abstract


      Catfishes of the family Ariidae are commercially important and are represented in Indian waters by 22 species under 5 genera:Arius Valenciennes (18),Osteogeneiosus Bleeker (1),Hemipimelodus Bleeker (1),Batrachocephalus Bleeker (1) andKetengus Bleeker (1). On the basis of certain osteological and morphological characters of the genera, the interrelationships of the Indian genera have been delineated. It is adduced that the Indian Ariidae have had two phyletic lines of evolution.Arius seems to have evolved fromOsteogeneiosus like ancestor whereasBatrachocephalus appears to be fromKetengus like fishes.Arius is much more advanced than all other Indian genera and has been able to proliferate and reach wider areas than the others. An intermediate connecting link betweenKetengus andOsteogeneiosus appears to be missing about which information is lacking at this stage.

    • Author Affiliations


      K C Jayaram1 J R Dhanze1

      1. Zoological Survey of India, 27, Jawaharlal Nehru Road, Calcutta - 700 016, India
    • Dates


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