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Reeta Kumari ¹, R. N. Pathak ¹, P. Rani ¹

Affiliations
1 Department of Zoology, D.A.V. P.G. College, Siwan-841 226, Bihar, IN

Abstract

The paper deals with the ecological studies of River Daha in north Bihar in relation to its physico-chemical charactersitics and the fish fauna. The fish fauna is greatly affected by the characteristics of water and level of pollution. The reiver is periodically gets much polluted due to discharge of sugar factories wastes and distilley effluents as reflected by low dissolved oxygen, high BOD and COD values and low pH. In all, 32 species of fish belonging to 7 Orders, 15 Families and 19 Genera were reported from the river. Many of these species come in the category of hardy fishes reflecting their tolerance to polluted conditions.

Keywords

River Daha, Fish Diversity, Ecological Status.

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Reeta Kumari ¹, P. Rani ²

Affiliations
1 Department of Zoology, D.A.V. College, Siwan-841 226, Bihar, IN
2 Department of Zoology, Patna Science College, Patna-800 005, Bihar, IN

Abstract

Physico-chemical parameters of Daha river in Siwan were measured at monthly interval from November 2005 to Octeber 2007. This river gains some nutrients from domestic wastewaters and from animal wastes. The various parameters like temperature, pH, turbidity, total solids, DO, BOD, COD, chloride, sulphate, etc. were studied. The water was slightly alkaline. Significant seasonal variations were observed throughout the study period. The overall level of various parameters suggests that the river not much polluted.

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