It's not frequency that causes problems; it's quantity. I feed
miniscule amounts several times per day, no single food more than 2 or 3
times a week. They lick the platters clean in seconds, not minutes.
Their diet consists of shrimp once a week, various flakes often, live
guppies twice a week, I forget the name of the refrigerated stuff,
different kinds of pellets, occasionally some scrapings from my own raw
oyster on the half shell. My fish don't have bony butts, but they're
not fat either.

rtk