Betta fish not moving but still alive, looking dull and stomach is looking big, did I overfeed him?

[Fish4life]

 

[Caryl]

Unless a male Betta has something to compete against (another male or to impress a female) they tend to hang about like this. Try putting a mirror in there and see if you get a reaction.

[Fish4life]

Sadly it was not just bordem or tiredness, it was something else that lead to his death today

[Caryl]

Sorry to hear that but without more detail, it is not easy to offer suggestions. One of the first things you should always do is test the water for ammonia, nitrites and nitrates, along with pH. Betta are very sensitive to water conditions and need top quality water.