Fish Health

Hello, I am concerned about my fish;she won't eat. I got her yesterday and I'm guessing she's full-grown, but what I give here she isn't eating.I've had a fish before but he he cut himself(I have no idea how..) and died. I want her to live a little longer than the last one but am deprived of much exeperience with fish.
   
Please get back to me soon,
   
Corgilover226
   
Thanks