All those fish have pretty tiny mouths, so I'd have to say no to them eating the egg. How big is your tank? I did the jar thing in a 5g tank with a baby food jar I got from a friend; it only took up a little room, not too bad. But, it's a lot easier to just leave the egg. After all, if it is fertilized it'll hatch in a few days anyways.

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When in doubt, do a water change.