Cihlid-man is correct. I also think it's the bloat. I made the mistake of feeding my malawis some dehydrated shrimp...they loved it, but I lost my demonsi, borleyi, lab mbuna, and another eloganus. If you can QT the Red do it. If not, let it ride, feed lightly and make sure you check the protien content on all foods for your Africans. Most need lower protiens. They have long digestive tracks and process their food at alot slower level than other fish. It's almost impossible to save a swimmer from bloat once it shows signs that are to the progession your Red is. I hope he comes through.