author(s)
Atom Arun Singh, Shongsir Joy Monsang and Saumyendra Nanda

abstract
In the present study, the experiment was conducted for a rearing period of 90 days, the experimental animals were fed with three different treatments incorporated with Aqua-Mos at a level of T₁ (0.5%), T₂ (1.0%) and T₃ (1.5%) and T₀ (Control). In a treatment T₂ (1%) inclusion of Aqua-Mos to the basal diet showed better result in terms of increment in growth, percentage of maximum specific growth rate and better survivability. The food conversion efficiency, body weight gain, and survival of fry of Anabas testudineus was significantly improved by supplementing diets with 1.0% inclusion of Aqua-Mos in the basal diet as compared to that of 0.5% and 1.5%. Adding 1.0% of Aqua-Mos to the feed significantly improved immune capacity of the species under study as indicated by the growth rate of the fish as well as survival percentages. The treatment (T₂) contains a crude protein percentage of 37.60 ± 0.32% where as the treatments like T₁ and T₃ contains a higher crude protein percentage of 43.75 ± 0.60 and 40.68 ± 0.22 respectively. However, the mean weight gain at the end of experimental period was found to be maximum in the treatment (T₂) fed with 1% incorporation of Aqua-Mos in the basal diet. It was recorded that a mean weight gain of 7.80 ± 0.18g with a maximum specific growth rate of percentage of 3.00 ± 0.24. In the present study, Adding 1.0% (T₂) of Aqua-Mos to the feed significantly improved survival percentages i.e 100% survivability followed by 1.5% (T₂) with 90% survivability.