Just curious. I haven’t had a betta fish since I was a kid, maybe 20 years ago. I remember they would always flare whenever I put a mirror in front of them. I just recently got a betta and he doesn’t flare at all.

https://i.redd.it/95fs2zw6smud1.jpeg

Posted by ldkAnythingHelpMe

1 Comment

  1. ignorantnormie on

    Bettas were initially bred for fighting, with aggression being a prioritized trait. With betta fighting being far less common nowadays, it’s reasonable to assume they’re bred for color & shape, rather than aggression, leading to a gradual decrease in aggression over time.

    I can probably count on a single hand how many times my betta has flared since I’ve had him (for about a year).

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