A fascinating betta splendens behavior

[Emeraldsea]

My betta splendens are surprisingly chill.
Both males and females, all in one tank, getting along just fine. Not a single fight to report.

[whetu]

I've had good experiences breeding Betta Splendens too. Never had much trouble with aggression, as long as the tank is spacious and well-planted with plenty of surface plants. I think these guys, like most fish, value their territories. What often happens is we disrupt the tank and inadvertently destroy the territories they've established, which can trigger fighting.

[dungeon]

Wild betta splendens, I've noticed that too. The key difference is that wild males tend to be less aggressive than their domestic counterparts. I think Emeraldsea hit the nail on the head by saying they live in harmony - it's like they've learned to respect each other's space.

[Emeraldsea]

I've had good experiences breeding Betta Splendens too. Never had much trouble with aggression, as long as the tank is spacious and well-planted with plenty of surface plants. I think these guys, like most fish, value their territories. What often happens is we disrupt the tank and inadvertently destroy the territories they've established, which can trigger fighting.

I've kept multiple fancy betta in one tank, and they coexist peacefully, as long as the tank is spacious enough for each to claim their own territory.