Purposely sinking food?

One of my common goldfish all nut refuses to eat floating food at the
top of the tank. However, she's quite happy to scour food from the
gravel and eat food that sinks. It concerns me slightly that she eats
a fair amount less than all the others, even my small veiltail. Is it
at all common practice to sink food purposely into the gravel for fish
like her? Is there some way I can encourage her to feed at the top
with the others? She's fairly aggressive when it comes to sinking
food, and she'll push the other fish around, but she seems
uninterested in floating pellets or flakes.

JS

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Jan Sacharuk Member in Good Standing of The Discordian Solidarity
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