Someone suggesting that polys won't eat dry food reminded me of something Ad Konings wrote years ago.
The following is a direct quote from one of his books published back in the mid 90's.
"Males of many Utaka will not regain or acquire their breeding colours when fed exclusively on dry food. "
Had he stated when fed exclusively a very low quality dry food, that may have had some truth to it. Years ago I had someone who has dove in Malawi, and collected thousands of fish, in my home, viewing my breeding groups. In his opinion my fish were every bit as colorful, and healthy looking, as those that he collected in the wild.
So sometimes even the experts can get it wrong.
True enough, but remember I went that route with the group at loaches-online, and basically got poo-poo'd by their admin, and the author of an article where he had basically got his entire commentary ass-backwards.
The result of that was me writing my own article, with credible references, and credible photos from sources with their feet on the ground in that part of the world, which I later posted here on MFK, which later became a sticky. That's how enthusiastic I became.