Mine is getting used to the normal feeding times here at home now, and will wait in the water stream from the filter. The flow throws the food right at her. I crush my flakes so she doesn't have to work hard. And yes, they can and do scavenge from the ground or sponge filter. When she is hungry and it is not feeding time, she will sit on the sponge I placed on the intake, and gather her food from the incoming water as some others have noticed.
I have never tried a turkey baster for feeding, I'm afraid I'd squeeze to hard and knock her over.

hahaha.