Choose the right tank size for the fish species
Set up a proper filter and heater if needed
Use dechlorinated water
Cycle the tank before adding fish
Keep water temperature stable
Test water regularly for ammonia, nitrite, nitrate, and pH
Feed the fish the correct amount
Remove uneaten food
Clean the tank and gravel regularly
Do partial water changes on a schedule
Avoid overcrowding the tank
Match fish species that can live together
Watch fish for signs of stress or illness
Quarantine new fish before adding them to the tank
Maintain proper lighting
Keep the tank lid secure if needed
Do not tap on the glass
Handle fish as little as possible
Replace filter media as recommended
Keep tank decorations safe and non-toxic