Avoid crowding fish
Quarantine new fish for 4 weeks or above
Mix only compatible species
Feed a variety of fresh, quality food
Maintain the preferred water parameters for your fish
Use a quality filter that is the right size for the tank; clean it regularly
Maintain regular water changes while vacuuming bottom debris - be meticulous
Make sure all replaced water matches that of the water removed in temperature, pH, salinity,
and be toxin-free
Watch daily for any signs of stress or disease and act immediately
Remove dead fish immediately