HI NAGS, WELCOME TO FISHLORE!
Lots of folks here like to give their fish veggie treats....I don't know if it is more important than good quality food with variety.
If you do feed fresh veggies, be sure to wash them thoroughly, and remove after a few hours so the left overs don't foul the tank.
I just made some food which includes vegetables and protiens from raw beef heart and shrimp. You can find the receipe here, the good thing about this home made food is it also includes garlic and vitimans which are both good for fish.
By the way, when you got your fish, did you plan on upgrading to a larger tank soon? Several of your fish are suited to bigger tanks. Sometimes the people at the LFS don't pass this information on...