Picky eaters

My angels, which started out as tiny little things, have grown into quite large fish - probably over 4" long counting the main part of the tail. I have these sinking pellets for the corys which the angels have taken a liking to - they swallow them whole if then intercept them on the way down. So, thinking that they could use some larger food, I bought them some floating "cichlid pellets". And the angels are totally uninterested in them. When I throw the pellets in, the platies go for them (but can't do much with them) and once they soak a bit the "baby" Macropodus will eat them...but the angels seem uninterested.