Aquarium for House

We were thinking of having an Aquarium in our office/house. So, we were wandering to know, what all some body has to take care while setting up an Aquarium in their House?

1. Size of the water tank or Aquarium you need.

2. No. of Fishes you need to put.

3. Combination of fishes, you need to have; Gold Fishes & Black Fishes.

4. Location or Place of putting an Aquarium in House.

5. Direction of Aquarium.

6. Water quality, Temperature & other factors.

Share your suggestions on all these points/facts, so that we & other like us can have ease to do this on our own.

You can also refer this to experts, we can further advise on this.