这些食物提供了丰富的蛋白质和营养，有助于维持刀鱼的健康和生长。
此外，七星刀鱼也可以接受一些人工饲料，如鱼粉或肉类饲料。
这些饲料需要细碎，以适应刀鱼的口部结构。
七星刀鱼是肉食性鱼类， eating a variety of small invertebrates and soft-bodied animals such as shrimps, clams, and earthworms. These foods provide them with a rich source of proteins and nutrients, which are essential for their health and growth. Additionally, they can also be fed with some prepared fish meals or meat-based feeds. These feeds need to be finely ground to accommodate the mouth structure of the knife fish.