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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.