swordtail food ?

[radders]

I have recently introduced two swordtails to my tank, they dont appear to be eating the standard flakes.
they grab a flake and chew but dont seem to swallow.
Should I be rushing out to buy some different food ?

 

[WILDER]

They do tend to do that when you first buy them, as they prefer the one that the lfs fed them, but they will eat it soon it takes them a while to take to a new variety,try them with some bloodworms or a shelled pea.