Frozen, fresh and dried foods fill in the gap here and are an easy and economincal alternative. However, for the best results, you really need to feed as much live food as possible. Growth will be faster, fish will be more colorful and egg production will be higher. Sometimes works well. If you have a pair of killies that were raised on live foods they may never eat dry food, but if you raise a batch of fish and start them young they may eat it with gusto.
Some species seem to take it more readily than others.
The best food for killifish Live foods are the best food for killifish and comes closest to what they would eat in nature. Among the more popular foods for killies are wingless fruit flies, worms, Daphnia and brine shrimp. These foods can be collected, cultured or bought though a store. The mainstay in killi-keeping would have to go to frozen bloodworms. If you or your local club look around, 8oz packets, in quantity can be had for around two dollars in 1989.