If so, what do you feed them?

I used to feed Victor Performance previously, but now feeding Diamond Naturals Senior.  My two males who are passed now lived to be 11 years.  I still have my female who is 9 years old.  My girl is the middle one this pic is two years old.  The reason I changed is my female inhales food and she seems to take longer picking up the smaller bites....also my small dogs can manage the bite size better.

I feed diamond naturals lamb and rice to my girl that is 6. She has a sensitive stomach, and it really keeps it in check. :)

Also taking name suggestions for a male blue harlequin :)