Effect of prebiotic Imonoval on reproduction and growth factors in ornamental fish molly (Poecilia butleri)

Prebiotics are non-digestible ingredients that by stimulating the growth and activity of bacteria in the intestines have beneficial effects for the host. However, few studies on the effect of prebiotics on reproduction and growth factors in ornamental fish were done. In this experiment, the fish was 20 weeks old. Tests carried out in the form of 4 treatments and 3 repetitions. Four diets, including treatment 1 (control), 2, 3 and 4 respectively containing 0, 0.5, 1 and 1.5 percent Imonoval was prepared. Fish were fed 3 times daily for 5 percent of body weight for 26 weeks. Results showed that the final weight and length were not significantly different in different groups. Relative fecundity, gonadosomatic index, length and weight of larvae were significantly lower in control group compared to group 3 and 4 (P<0.01). Results also showed that Imonoval has no effect on sex ratios. In this experiment, according to the results of the growth and reproductive factors, dietary 4 showed better performance than other treatments. In general, the use of prebiotic Imonoval in Mollies fish diet is recommended.