The nutrition of fish has been the subject of much scientific study over the past few decades. They require an adequate diet containing a nutritional balance of proteins, simple carbohydrates, unsaturated oils, fatty acids, minerals and vitamins. Should your fish show signs of retarded growth and reproduction, this could be caused by a diet imbalance. Some fish foods contain wheat germ that is high in carbohydrates and can lead to the reduced growth of your fish. In addition, excessive carbohydrates can cause blood sugar levels to increase thereby affecting the heart.
Food performs many functions within the body.
It is a source of fuel to create energy that will drive the muscles used in movement and keep internal organs working. It creates complex anti-disease mechanisms within the body. It creates a store of energy that can be used as a form of insulation in the form of fat layers. It creates pigments that give the fish their unique colors and patterns. Many Fish Keepers believe that the various types of koi pellets provide the best type of food with least waste.