Originally Posted by Angela1108
Well the smaller the tank the harder it is to keep the tiniest thing can change water parameters!
As for the goby it would depend what kind. I don't think many would stay small enough.
Fresh or salt? The fresh water gobies (very few) all get very large that I know of
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This is the saltwater section..
Referring to advice for Saltwater tanks...
A 3G tank is perfectly do able. As long as you stay on top of things.
I do not recommend any fish for a tank this small.
Inverts and corals are fine. Assuming that the appropriate equipment is on hand.