Mixture of Hydrilla verticillata (Order: Hydrocharitales) and Blaptica dubia (Order: Blattodea) as Fish Feed

In Malaysia, there is an issue of increasing demand and unstable production of fish meal which led to an increasing cost of aquaculture production. Despite the nutritive value of fish meal, the escalated cost of fish meal has urged the industry to seek for alternative protein source to replace the costly fish meal. In this research, different proportion of Hydrilla verticillata and Blaptica dubia were used to produce fish meal. The proportion were named as T1(60% Hydrilla verticillata and 40% Blaptica dubia), T2(70% Hydrilla verticillata and 30% Blaptica dubia), T3(80% Hydrilla verticillata and 20% Blaptica dubia), T4(90% Hydrilla verticillata and 10% Blaptica dubia) and T5(100%Hydrilla verticillata. T5 had the highest floatation compared to other diets. Thus, T5 can be indicate as pellet that has good water stability. From the result obtained, T3 is the most suitable diet to be use as commercial pellet in the future. However, others diet can be suggested to be consume according to life stages of fish and based on their species as differ species require different amount of protein content. The result showed that, these treatments can be locally developed to substitute commercial pellet in the future as both raw material contain high protein content and easily available.