Effect of feeding level fish density on growth and food conversion of cultured white-spotted rabbitfish (Siganus cansliculatus Park,1797)

The effects (of three feeding levels (5, 10 and 15)% of fish weight on food conversion rate (FCR) and specific growth rate (SGR) of juvenile white-spotted rabbitfish (Siganus canaliculatus Park, 1797)] were studied in aquariums fish laboratory of Sammaliah Island-Abu Dhabi during first May to 30 June of 2001. Statistical analysis proved that there are significant differences between FCR (2.46, 1.98 and 4.77) and SGR (1.97, 3.44 and 3.22) for white-spotted rabbitfish reared at different feeding levels (5, 10 and 15) % respectively. The effects of three fish density (40, 80 and 120) fish/m of fingerlings on FCR and SGR were studied in floating cages of Sammaliah Island during 3t4 July to 20November of 2002. Statistical analysis proved that there are significant differences between FCR (2.12, 2.52 and 1.71) and SGR (2.07, 2.23 and 2.75) for white-spotted rabbitfish reared at different feeding densities (40, 80 and 120) fish/m' respectively. It has been found that 10% feeding level and density of 120 fish/m' give better results from economical point of view.