africans in general can suffer from bloat. Malawians i found to be less likely to get it as i used to feed a wide variety of food. Several bought fish foods, sushi wrap, shelled peas, blood worms, even steak but with the tropheus i'm not prepared to run the risk of them getting sick so i stick to NLS. My opinion on feeding random foods to the malawians is everything in moderation and give them a variety, it worked well for me.