How many betta fish eggs survive?

The survival rate of betta fish eggs is highly variable and depends on several factors, including:

* Water quality: Clean, dechlorinated water with appropriate temperature and pH is crucial for egg survival.

* Parental care: Male bettas are known for their brood care. They build a bubble nest and guard the eggs, keeping them aerated and free of debris.

* Fertilization: The number of fertilized eggs directly affects survival.

* Disease: Infections can quickly decimate a clutch of eggs.

* Predation: Other fish or even the female betta can eat the eggs.

Generally, only a small percentage of betta eggs survive to fry. Estimates range from less than 10% to around 50% in ideal conditions.

Here's a breakdown:

* Initial fertilization: Not all eggs are fertilized, and only fertilized eggs can develop into fry.

* Early development: Eggs are susceptible to fungal infections and can be eaten by the female.

* Fry stage: Fry are very vulnerable to water quality issues and predation.

To maximize survival:

* Provide a clean, well-maintained tank with proper water parameters.

* Allow the male betta to care for the eggs and fry.

* Minimize stress to the breeding pair.

* Keep the tank free of other fish that might eat the eggs or fry.

Even with the best care, betta egg survival rates remain unpredictable.