what they said plus, if you ever have anyone come in to feed any of your aquatic pets the best thing you can do is put individual containers of each days food out for them. I've found that what is a pinch of food to me may be a starvation diet others. I've heard horror stories about people coming home after a weeks vacation only to find a can of what should have been 2 months worth of food empty and a tank full of fish floating belly up.