Parrot fish generally don't eat the fry they give birth to. Under normal circumstances, parrot fish won't consume their offspring. However, if they do eat the fry, it could be due to certain environmental or physiological factors. For instance, if the water quality is poor, or if the female fish is hungry or startled, it might lead to her eating the fry.
To ensure that parrot fish don't eat their babies, the following measures can be taken:
Maintain Clean Water Quality: Regularly clean the fish tank to prevent the growth of bacteria and ensure that the parrot fish live in a healthy environment.
Maintain Appropriate Stocking Density: Don't overcrowd the tank. Provide parrot fish with enough space to move around, thus avoiding stress and conflicts caused by insufficient space.
Avoid Complex Landscaping: A bare - bottom tank is a better choice. Since parrot fish are lively and active, they can easily damage complex tank landscapes, and such landscapes also make it difficult to clean up feces.