Before adding fish to your aquarium, research their temperaments. Some are peaceful, while others can be territorial or aggressive.
Take into account the size of your tank and the space each fish needs.
Select fish species that are known to coexist peacefully. Some fish have natural partnerships in the wild, making them ideal tank mates.
When adding new fish, do so gradually. Sudden additions can disrupt the existing hierarchy.
Keep a close eye on your aquarium and the behavior of its inhabitants. If you notice signs of aggression or stress, be prepared to make adjustments.