Aquamax IMO and that of others has cheapened their larger AM pellets - 500 & 600. They no longer smell like fish and I think they contain more grain. These larger pellets are supposedly not made anymore in the Richmond,IN feed mill owned by Purina. Mfg has been contracted to Rangen Feeds. My perch did not perform well this summer on the new AM600.
I am planning to switch my feed for yellow perch to Zeigler. Zeigler makes a special feed for yellow perch. Some of the best YP production growers in Ohio have switched to Zeigler feed.
Zeigler Perch Diet: 45%protein-12%fat A highly digestible diet for yellow perch and other members of the perch, pike and walleye families, this diet provides essential nutrients for proper development of temperate and cool-water carnivorous species.
http://www.zeiglerfeed.com/product_liter...Information.pdf