I found something pretty neato!

[Brinny-chan]

http://www.ibcbettas.org/StadBylawsForms/NewbySystem.pdf

If anyone was interested in building a big filtered betta wall with separate compartments xD I think the only practical use would be if you were actually breeding them for profit or totally obsessed with bettas; but I just thought I would post this.

 

[Dan Steveo]

wow thats a huge set up. it looks unfair for the fish though....

 

[TheFighterFish]

With bettas, I hope there are some kind of blinds in between the fish. I know petstore here don't use covers (usually a slip of paper between the cups). But in Vietnam, the Bettas have much more beautiful colors and greater intensity. The Bettas here don't even flair when they're next to another male.