Frozen Foods
The absolute healthiest foods to give your fish are frozen foods. These are clean and nutritious food sources that retain the highest nutrition value since there is limited processing involved. The best foods are often a combination of many fresh ingredients that are finely chopped and blended to provide a varied diet for your aquarium.
For most frozen foods, rinsing the cubes through a fine mesh net is necessary to remove some of the dissolved nutrients that may pollute the aquarium if left to scatter in the tank. Some gel-bound foods are relatively clean and will not scatter so they do not need to be rinsed. In fact, rinsing may cause the foods to lose some of the necessary ingredients from the mix.