I've had one of my bettas (Acarnan) since October and he's never flared at anything. He lives in a divided 5g with my other betta (Enjolras), but they've never flared at each other. While Enjolras has flared at his reflection when the tank light is on, Acarnan hasn't. Apparently he almost flared at his reflection once while I was out, but then decided not to and moved on.
So I'm just curious...do I have a shy/mellow betta?
Acarnan | HM
SIP Enjolras. ♥