I'm new to this fish hobby, and I would like some idea as to how big of a tank I should get if I wanted 7 zebra danios and 5 corydoras in the tank. possibly might even add some serpae tetras later if I can raise up enough allowance (i've been saving up for quite some time now). I read on some site for every inch of fish I should have a gallon of water, but read on some other sites 2-3 gallons of water for every inch of fish. I saw a pretty good deal for a ten gallon tank with almost everything needed to start it. but didn't know if it would be enough for the number of fish that I would like to have.