Low maintenance, small tank fish

Hey, everyone.

I'm looking for advice on fish that take little maintenance that can
live in a small tank. I'm planning on getting a small tank for my desk
at work.

I have goldfish at home, but I'm unwilling to buy a 10G tank that
needs water changes once a week and a major cleaning once a month.

Oh, and the fish will need to be able to survive a weekend without
feeding, or be willing to eat readily purchasable plants that I can
put in the tank. Ideally, I'd like to have more than one fish in
there, so small schooling fish would be okay, too.

So, any advice?

Thanks,

JS

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