Here’s a comprehensive guide on feeding amounts for betta fish, tailored to different growth stages and seasonal needs:

I. Feeding Standards for Adult Bettas
Regular Feeding Amounts
Adult bettas (with a body length of ≥4cm) should be fed 8-12 pellets of specialized food daily, divided into 1-2 feedings. Each feeding should consist of about 8-10 pellets, enough for them to finish within 5 minutes. During the breeding season, breeding pairs need to be fed 3-4 times a day, supplemented with high-protein live food like brine shrimp.
Seasonal Adjustments
In winter, when the water temperature drops below 20°C, feeding can be reduced to once every 3-4 days. In summer, if the fish show decreased appetite due to high temperatures, reduce the feeding amount and monitor their digestion.
II. Feeding Juveniles and Fry
Juveniles (2-4cm)
Juvenile bettas should be fed 10-15 pellets daily, split into 2-3 feedings (5-7 pellets each time). The food should be ultra-fine brine shrimp eggs or powdered food, with each portion sized to be eaten within 5 minutes.
Newly Hatched Fry
Newly hatched fry need to be fed ultra-fine brine shrimp eggs multiple times a day. Feed small amounts frequently to avoid leftover food polluting the water. After 2-3 weeks, gradually transition them to first-stage floating pellets.
III. Important Considerations
Feeding Principles
Follow the "small, frequent meals" rule—each feeding should be roughly the size of the fish’s eye (about 5 pellets per serving). Avoid overfeeding, and promptly remove any leftover food to prevent swim bladder issues or bloating.
Food Choices
Prioritize high-protein specialized pellets (containing fish meal or shrimp meal). Live food (such as bloodworms or brine shrimp) should be disinfected before feeding and offered no more than twice a week.
IV. Handling Special Situations
If your betta shows no interest in food, check the water quality or adjust the feeding time (early morning, 9-11 AM, is recommended). Female bettas during the breeding season can have their food intake slightly reduced to prevent excessive weight gain, which may hinder egg-laying.