The length of time that a goldfish can survive without eating depends on various factors, and generally, it can last for about 20 days to 1 month. Goldfish have relatively strong starvation resistance. Without being fed, they can usually hold out for 20 to 30 days, and some goldfish with better constitutions can even last for more than half a year. However, not feeding for a long time will cause goldfish to be malnourished, affecting their health and appearance.
The specific time range of how long a goldfish can survive without eating:
- 20 to 30 days: This is the starvation resistance limit for most goldfish. If there are microorganisms such as algae or plankton in the water, goldfish can feed on them to survive.
- Half a month to one month: Under normal circumstances, goldfish can last for more than half a month without eating, and it is even possible for them to go through an entire winter without eating.
- 2 to 3 weeks: At a normal water temperature (18-25°C), goldfish can hold out for about 2 to 3 weeks without eating.
Factors that affect the starvation resistance of goldfish:
- Water quality: The quality of the water directly affects the survival time of goldfish. Good water quality can extend the survival time of goldfish.
- Water temperature: Changes in water temperature will affect the metabolic rate of goldfish. When the water temperature is lower, the metabolism of goldfish will slow down, allowing them to hold out for a longer time.
- Microorganisms and plankton in the water: Microorganisms and plankton in the water can provide certain nutrients for goldfish, prolonging their survival time.
Possible reasons why goldfish don't eat:
- Water quality issues: Poor water quality will cause goldfish to lose their appetite and even refuse to eat.
- Low oxygen levels: Insufficient oxygen in the water will affect the breathing and appetite of goldfish.
- Toxins: Toxins in the water will have a negative impact on goldfish, causing them to refuse to eat.
- Diseases: Goldfish may suffer from certain diseases, leading to a loss of appetite.
- Parasite and bacterial infections: These diseases will affect the health condition of goldfish, causing them to be reluctant to eat.