those fish are not belong to me,is just to show u even mp can make your fish grow big and stay heathty,there are more video to show u,even some of them are my friend,yrs back i dont ready know how to use youtube and youtube doesnt exit in the early days,and most of those video i will delete away when fish is sold and once my pc break down,all those record just gone in a day.anyway back to the topic.prawn are proven by singaporeans for the past 10yrs or more and now even japapese follow our step to feed mainly on prawn.anyway simple logic that tell u many type of food is good for fish even human but that is not a "MUST" for fish.as i mention before,no one can proof that,is just like a guessing game all along like what doctor use to do on human.i can say 90% of singaporean feed their tiger with prawn.is easy to find here i can say.if u compare all those tiger ard the world vs sg,u will know what im trying to say.not just base on just a few video and picture u can hv the answer,try google ard,see more picture and video,u will know what im trying to tell u.