Main reasons for fading of blue betta fish:
Variety reason: Some varieties of betta fish, such as marble-colored betta fish, will change color as they age or with environmental changes. This color change is natural and cannot be changed.
Old age: As the betta fish ages, the body's metabolic rate slows down and the ability to produce pigments decreases, resulting in faded colors.
Abrupt environmental change: If the living environment of betta fish suddenly changes, such as water temperature change or water change, it may cause the betta fish to fade due to inability to adapt to the new environment.
Solutions to fading of blue betta fish:
Select an appropriate variety: When purchasing betta fish, choose a variety that is not prone to color change and avoid choosing marble-colored betta fish.
Improve the breeding environment: Keep the water temperature between 25-28°C, change the water every 2-3 days, reduce interference to the betta fish and let it slowly adapt to the new environment.
Avoid abrupt environmental changes: Try to avoid suddenly changing the living environment of betta fish, keep the water temperature stable and avoid excessive temperature differences.