As I am not certain what everyone really wants...So I make a mixture of the following...and keep in air-tight jar. Keeps me from having to open different containers each time I feed. Also, I think keeps fresher and keeps me from over-feeding. Couple of times a week they get a bit of my ground up sea animal mix...(oysters, clams, squid, scallop and clam). They seen to be "happy" fish and I have no problem with algae or nitrates getting out of hand..