* Territoriality: Betta males are highly territorial and will defend their space fiercely. They see other male bettas as rivals and will fight to establish dominance.
* Breeding competition: Male bettas engage in elaborate displays and fights to attract females and secure mating rights. This competition can become aggressive and lead to actual fights.
* Hormonal influences: Betta males produce high levels of testosterone, which contributes to their aggressive tendencies.
* Evolutionary adaptation: Over time, betta fish have evolved to be more aggressive as a survival mechanism. In their natural habitat, they live in small, isolated pools and compete fiercely for resources.
It's important to note that while betta fish are known for their aggression towards other males, they can often coexist peacefully with other fish species in a well-maintained tank. However, it's crucial to provide them with adequate space, proper water conditions, and hiding places to minimize stress and potential aggression.
It's also important to avoid keeping two male bettas in the same tank, as they will almost certainly fight.