Male Bettas:
1. Reduced Aggression: Male Bettas are known for their aggressive behaviour, particularly towards other males. When they are separated and kept alone in a tank, they tend to become less aggressive since there are no competitors for their territory.
2. Decreased Display Behaviour: Male Bettas are known for their elaborate displays, including flaring their fins and displaying their vibrant colours, when they see another male or are trying to attract a female. Without the presence of females or competing males, they may display these behaviors less frequently or not at all.
3. Changes in Colouration: Some male Bettas may experience slight changes in colouration when separated from females. Their colours may become less vibrant or intense since they are not competing for attention or trying to impress a mate.
Female Bettas:
1. Reduced Stress: Female Bettas can also become stressed when kept with aggressive male Bettas. By separating them, females may experience reduced stress levels, which can lead to improved health and well-being.
2. More Active: Female Bettas, when kept alone, tend to be more active than when they are with males. They may explore their environment more freely, swim around more, and interact with tank decorations.
3. Reproductive Behaviour: Female Bettas may still display some reproductive behaviours, such as building bubble nests, even if there are no males present. This is a natural instinct that they might continue to exhibit regardless of the presence of a mate.
It's important to note that individual Bettas can vary in their responses to separation, and some may show more or less noticeable changes in behaviour. Additionally, providing a stimulating environment with suitable water conditions and tank decorations can further enhance their well-being, whether they are kept alone or together.