New Angels not eating

[partobe]

Hi just bought 6 new angel fish. They've been in the tank for 2 days now and they dont seem to want to eat. They swim around all day nibbling at the plants and moss but when I go to feed them they eat it and spit it out. They have eaten a little of the freeze dried warms. Is this norm? Any suggestions on encouraging them to eat. They are def hungry because every time I walk over to the tank the swim to the top.
thanks