Today we read a booklet about how to care or them. ( How much to feed them, where to put them and other useful information). So you have to use a tooth pick to feed them. The food is called speralena and we got it in a small bag. Keep it in the refrigerater to keep fresh. Also don't keep it in the sun and don't fill it to the top. But when a lot water evaporates fill a cup of water wait then pour it in.