Best food?

Hey everyone, my food is getting low, and it is almost a year old. So the nutritional value has probably gone down. I am going to stop by petco on my way home from work and pick up some more food. What brand is the most nutritional for fish? Other than tropical flakes, what else should I get?

I currently have
guppies
long finned zebra danios
a betta (he has betta min)
a dwarf gourami

The dwarf seems to be a bit picky on what he eats. He wouldnt eat the tropical flakes (spat them out). It seems like he eats betta min but I have seen him spit some of it out. I think he just looks for the brine shrimp in it.

I have some brine shrimp hatching right now that I will probably feed to them.

I plan on getting corrys as well. So what should I get for them?

Well I stopped by petco on my way home. The best I found for normal fish food was omega one. They had some hikari stuff, but no flakes or pellets. Just algae wafers and various other things like that. Idk if hikari makes any normal food or not. But I was tempted to get the freeze dried brine shrimp. I will probably pick them up next time. until then I will try the brine shrimp I am trying to hatch.

I think I saw some ocean nutrition stuff, but it was down by the freeze dried shrimps and stuff. It was like $6 or $7 too. I donated a tennis ball ($1) and got omega one for $4. But I got the smallest thing of omega one. The ocean nutrition probably had more food in it.