Do you get to see what the fly’s have eaten?

Question: Do you get to see what the fly's have eaten?
- Keywords:
  eat,
  fly
Asked by Aid3n to Sharon on 4 Mar 2017.
- Xueyuan Jiang answered on 4 Mar 2017:
  
  Yes!
  
  The fruit fly in the lab are kept in test tubes. The food is usually at the bottom of the test tube. It looks (and smells) like pudding, with yellow color and soft texture.