The Pirates Piranha

The group of Piranha fish which now had been moved to a larger tank for faster growth and equity of size, we added two piranha in one months again, they are totally eight piranha fishes inside the new tank and ready to prey with the teeth like a saw, these fish are always clustered in the prey, we fed them with meal fish( selar)about 4 fish meal daily, Arwana is very sensitive when approached, we should be carefully when change and clean the water of tank..