Industrially polluted Jakara dam water sample was analyzed; surface water temperature ranges 19.3 0C -27.8 0C , pH 6.3-8.4, electrical conductivity 87.5-117.3 us· cm −1 , chloride concentration was 0.5-1.4 mg· L −1 , dissolved oxygen 3.7-5.0 mg· L −1 , BOD 5 2.1-3.1 mg· L −1 , Lead 0.02-0.05 mg L −1 , Zinc 0.02-0.21 mg L −1 , turbidity19.8-90.0 FAU, transparency 100-368mm, and total dissolved solids 43.3-58.6 mg L −1 . Lead and Zinc were above the average concentration desirable limit. Species relative abundance recorded using gills and cast net sampling gears; S. gallilaeus (32%), O. niloticus (32.9%), T .zilli (26.3%), and C. gariepinus (8.8%). 300 samples of S. gallilaeus examined, 214 (71.3%) had food items in their stomach. T. zilli samples recorded 246 which includes 190 (77.2%) with food items whereas 56 (22.8%) had empty stomach. 308 O . niloticus stomach examined, 240 (79.9%) were identified with food items in stomach. C. gariepinus were 82 with 70 (97.2%) consisting of various food items. Plant materials, insects, insect larvae and smaller fishes were the predominant food items identified Index Terms-Fish species, Industrial effluents, Jakara dam, stomach food.
The diversity, length-weight relationship and condition factor of fish species of Thomas Dam, Dambatta Kano were studied fortnightly between November, 2016 and February, 2017. Fish species were collected using line nets, cast nets, hooks and traps; weighted to the nearest gram and standard length measured to the nearest centimeter. A total 313 fishes comprising of 7 families and 11 species were identified.
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