Option 1: Location: 1. North, 2. Southwest, 3. East, four. Southeast direction.
Option 2, placement position: the living room is 45 degrees diagonally (left or right) from the door.
Precautions for placement:
1. There is a wall behind the fish tank.
2. The fish tank is not facing the toilet door, stove mouth or shrine.
3. mantissa: three or four or seven tails. (Reference)
4. Fish types: goldfish, lucky, parrot, silver dragon, map ... my favorite. (Reference)
5. Color: blue, green, blue or green. (Reference)