Fish food for ornamental fish is available as dry food, frozen food, live food and fresh vegetables. Dry fish food is available in various dosage forms, the most well-known is flake food. There is also ornamental fish food in tablet form, as pellets, sticks or granules. Frozen fish food consists of frozen cubes of food containing mosquito larvae or slices of mussel, for example, and this is thawed before feeding. Frozen food is not a basic staple, but a delicacy and an alternative to live fish food. You can also get larvae from mosquitoes or water fleas as live feed, which as supplemental food is a real enrichment for your fish. Most aquarium residents cannot subsist exclusively on this. You should only buy live food from specialist retailers and never collect it in nature as the risk of getting germs, snails or pests into the aquarium is too great. Frozen food should be thawed and briefly rinsed, and live food only rinsed in a sieve so that the transport water does not get into the aquarium. A good supplemental food for prawns and plant-eating fish types is fresh or cooked vegetables.