"Flake food" typically refers to a type of pet food designed for aquatic animals, particularly fish. It comes in the form of thin, flat, and often crispy flakes, which are designed to float on the water's surface, allowing fish to easily nibble on them. These flakes are formulated to provide a balanced diet for different species of fish, containing essential nutrients such as proteins, fats, vitamins, and minerals.

Flake foods are widely used for feeding freshwater and marine aquarium fish. The ingredients and nutrients can vary based on the type of fish the food is intended for, such as goldfish, tropical fish, or bettas. In some cases, specialized flakes are available for herbivorous or carnivorous fish.

The flakes dissolve in water over time, so it's important not to overfeed, as excess food can cloud the water and impact its quality. Many brands offer fortified or color-enhancing flakes that are designed to boost the fish's health and vibrant colors.