Well I bought 2 bags of Optimal, one of the BG and one of the bass sized pellets. I can't smell any fishy odor as most any other food I have fed has had, smells like cat or dog food to me. The BG feed is tougher to throw long distances since it is smaller, as expected. I mixed them together and have been feeding it for a week now, no tail dancing or increase in frenzied fish feeding activity, my fish fed heartily already. It actually seems to take longer for them to clean it all up, I suspect it is because the BG pellets are smaller so there are obiously more bites per feeding than with a larger pellet. I was able to source Aquamax grower 600 for $43 a bag and think I will be going to that at this point, I had trouble with the time it took to get my orders previously, we will see this time I guess.