Fish diversity studies of two rivers of the northeastern Godavari basin, India

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N.K. Heda


Fish diversity was explored in two rivers of the northeastern Godavari basin: the Adan, tributary of the Painganga, and the Kathani, tributary of the Wainganga. Both rivers are part of the same basin but present different ecological, climatic and anthropogenic settings. Six sites were sampled in each river system over three years using gill nets, cast nets and locally available nets; the ‘catch per unit effort’ criterion was used for sampling. Forty-seven species of fish were identified. Species richness (Jackknife 1 and rarefaction) and diversity measures (Shannon and Simpson) were calculated and their values clearly show that the Kathani is a more diverse ecosystem in terms of fish diversity than the Adan. This difference is mainly due to anthropogenic influences upon the Adan.

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Author Biography

N.K. Heda

Previously working in CES, IISc on People’s Biodiversity Register project. PhD in fish ecology presently working as project leader on project grant provided by Rufford small grant foundation, UK. Closely working with fishermen and labours for the conservation of the riverine resources and livelihood issues through a non profit SAMVARDHAN.