The use of medicinal plants for humans has beenwell known since the ancient civilizations, but their uses in fish
diets are still limited. It is believed that the use ofmedicinal plants as natural feed additives is less toxic and safer
than chemical ones. So, this studywas conducted to evaluate the use of caraway seed meal (Carumcarvi L.; CSM)
as a feed additive on growth performance, feed utilization, and whole body composition of Nile tilapia,
Oreochromis niloticus (L.). Five iso-nitrogenous (30.3% crude protein) and iso-caloric (4.5 kcal/g diet) diets were
formulated to contain0.0 (control), 5, 10, 15, or 20 g CSM/kg diet. Fish (3.6±0.3 g)were distributed at a rate of 20
fish per 100-L aquariumand three aquaria have been assigned for each treatment. Fish were fed one of the tested
diets at a rate of 4% of live body weight twice daily; six days a week for 12 weeks