-skips through- good lord nothing has changed... ANYWHO...
Bettas are of the same family as GOURAMIS. I found with most aggressive type fish such as gouramis and bettas, although something can be POSSIBLE is it REALLY in the best interest of the fish, or to "make it easier"? Sure ONE tank is easier... But come breeding time and conditions, crossing paths, and such.... It doesn't work. SURE I have seen people keep a male and female who "love each other" together. THEY DIE DAYS APART not because of HEARTBREAK but because of STRESS bringing on ILLNESS.
Anyone see where this is going?
Although the plan is lovely, I find if you had w
anted to do as planned, be prepared. I will say I had enough trouble dividing two males in a heavily stuffed 20 or 40 without one being stressed. Without sight, or perhaps without knowledge of the other fish's existence in the water there is still that delightful scent that is much like a "here I am! This is me!" signal common in sororities. Many fish, can get stressed from this. Which is why I had over 13 tanks, half of which were NOT divided, and even had females separated (plakats mostly it seemed) because they were the stressers or the stressees.
Now if you still would like to try, stuff that tank so full of gentle fabric, silicone and silk plants along with live plants until you cannot see through to the other side. Add "sight blocks" like large rocks and ornaments along with caves and dwellings. A neat idea would even to try having driftwood! Allow tons of stuff in there to avoid any chance of fights. Keep in mind some bettas fight to the death, others fight to "make a point" and part ways LOL. Some won't fight, some show off. Or some jus avoid situations. It all depends on the betta. Would I do this plan with my Fighter, a Veil Tail and my wimpy Half Moon? Probably not. Equality for size, strength and speed is best!