International Journal of Aquaculture, 2017, Vol.7, No.20, 126-133
132
Where TW = Total weight (gm.); TL = Total length (cm); a = Intercept of the regression line; b = Slope of the
regression line.
The well-being of the most dominant species was determined using Condition Factor (K) by the following
equation suggested by Bagenal and Tesh (1978).
Where TW = Total weight; TL = Total length; K = Constant value.
The fish stomach contents were analyzed following numerical and frequency of occurrence methods (Hynes, 1950;
Hyslope, 1980; Ugwumba and Ugwumba, 2007). Purposive sampling technique was employed to select the
districts based on fishing activities along the river. Totally 44 fishers (seasonal fishermen and farmers) were
interviewed to collect data on the fish catch and marketing.
Authors’ contributions
Kebede Tirfessa made the proposal and conducted the study. Dr. L. Prabhadevi being the mainadvisor corrected the manuscript. Dr.
Zenebe Tedesse was the co-advisor, assisted in the collection and identification of fishes and evaluated the manuscript for
presentation.
Acknowledgements
The authors are grateful to the Director, Fishery and Aquatic life research center, Sebeta, Ethiopia for providing the electro fishing
gadget for the collection of fishes.
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