Rearing of Rabbitfish Fry Siganus Rivulatus in Different Culture Tank Shape and Its Impact on Growth Performance = رعاية زريعة أسماك السيجان فى تانكات مختلفة الشكل وتأثير ذلك على مظاهر النمو

Abstract

This trial was conducted to the effect of culture tank shape on growth performance, feed utilization and body chemical composition of rabbitfish fry siganus rivulatus . The average initial weight was 0.18 g and three of culture fiberglass tank shapes (rectangular, circular and square) were tested. The fish fed at 7% of body weight on artificial diet and the fish were stocked at 40 fries per m 3 . The trial continued for 100 days. The results shown that, the growth parameters were significantly affected by the tank shape and the rectangular tank was the best in growth rate, survival rate and feed conversion rate of rabbitfish fry. The circular tank was better in final weight and weight gain than square tank while, feed conversion ratio did not differ between the circular tank and square tank, so it can be suggested that, the rectangular tank are more suitability for growth of rabbitfish fry than the other shapes.