The physiological growth of length and weight variables and the general welfare of Hepsetus odoe in Ogbomoso reservoir were investigated. The relationship regression coefficient indicated that the fish sampled showed allometric growth with regression factor of 0.88 in the natural population of fish. The mean K for 133 specimens was 1.5, while 1.5 and 1.6 were K based on sexes (male and female) respectively. Also, 1.789 ± 0.44 (F IV) and 1.880 ± 0.31(M IV) were the highest means K in female and male gonad development stages. The general well being of the sampled fish is affected by both gonads maturity and sexes (p>0.05) while habitat affinity, seasonal variations and size range do not (p<0.001).
Key words: Length-weight relationship, condition factors, resident water body, Hepsetus odoe.
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