I'M NOT RETURNING ANY and i've decided on a corie (probably) or a tetra.
Do what the **** you want, just stop talking to us about it. See we're fish lovers and want the best for your fish, unlike you apparently. Zebra danios NEED at least 10 gallons to be happy, and tiger barbs generally need more. Tetras also need schools. I don't know why you're asking questions when you won't pay attenion to any advice.