Abstract

Acute toxicity test was carried out with aqueous extract of Datura innoxia leaf on Clarias gariepinus fingerlings for 96 h under laboratory conditions using static bioassays with continuous aeration. The LC₅₀ of the exposed fingerlings was 120.23 mg/L with lower and upper confidence limits of 96.18 and 150.29 mg/L, respectively. The fish exhibited loss of balance, respiratory distress, vertical and erratic movement, accumulation of mucus on the body surface and gill filament and death. Water quality parameters were within recommended acceptable limits.

Key words: Datura innoxia, Clarias gariepinus, static bioassays, 96 h LC₅₀.