1. You should always research the different types of fish you are going to be housing together.† Certain fish can be extremely aggressive and cannot be paired with other fish of different temperaments.
2. Make sure that the bottom of your aquarium is fully supported by your aquarium stand.† If you have any gaps in the structural integrity of your aquarium, it is much more prone to breaks and leaks.
3. It is important to pay attention to the limitations of the fish you place in the aquarium.† Do not place fish into aquariums smaller than there recommended range, this can lead to increased aggression and decreased health.