Can you put a male and female betta fish together?

No, it is not advisable to put a male and female betta fish together. Betta fish, also known as Siamese Fighting Fish, are native to Southeast Asia and are known for their territorial and aggressive behavior, especially toward other betta fish. Males, in particular, are highly territorial and will fight each other to defend their territory, potentially leading to serious injuries or even death.

Introducing a female betta to a male's territory will likely trigger his aggression. Even during breeding, which requires close proximity, the male should be closely monitored and separated immediately if any signs of aggression are observed.

To prevent any harm or stress to the fish, it is best to keep male and female betta fish separately in their own respective tanks or containers.