Asian Journal of Advances in Research

The study was carried out between July to October 2018. Seventy-one (71) S. galilaeus(48.6%) from Ado reservoir, Sixty-nine (69) from Egbe- reservoir (47.3%) and six (6) from Ero- reservoir (4.1%) making a total number of one hundred and fourth-six (146) respectively. The fish samples were collected directly from fishermen at the bank of each reservoir. Analysis of variance (ANOVA) was used. The mean body weight and total length of the fish were 179.28± 53.71^c and 21.17 ± 2.21^c, 102.71 ± 41.78^b and 17.75 ± 2.30^b and 61.60 ± 2.207^a and 15.17 ± 1.37^a from Ado, Egbe and Ero respectively. The results recorded on the mean body weights and total lengths of the fish from the three populations are statistically different. But there are morphologically similarities between and among the three populations. Principal component analyses and cluster analyses were further used to determine the closeness of the morphological characters using paleontological statistics (PAST) software. The condition factors (K) values are 0.1 ± 0.04, 0.18 ± 0.04 and 2.5 ± 0.8 from Ado, Egbe and Ero reservoirs respectively. The condition factors value from Ero population was significantly different from the other two populations showed that the two populations (Ado and Egbe) unlike Ero population are not well fed. The robustness of the fish from Ero reservoir may be as a result of enough fertility of the reservoir or that there was a lesser competition from other fish species for the available food resources. There is need to determine the condition factor(s) which favours the growth and development of the fish from Ado (Ureje) and Egbe reservoirs.