i Must say its a very interesting design But I do agree that other fish would do better
You could have done small colorful fish who would grab attention and not produce as much waste 
Hater's gotta hate.
I don't think I'd be putting Male Bettas in 3 tanks that were joined with an aqua-bridge.Dude.. ideal for bettas and shrimp. The shrimp would thrive on those plants and the bettas would have more than enough room to flaunt their pretty fins. Of course, since it's acrylic they could see and flare at one another.. but they would soon learn and get used to their territories. Nice, dude.