If you want to do a sorority, you could do it in a separate tank. You can never tell how your male will react until you put something in there.
this is very true.
If you decide to do the divider rout...just be advised that if not set up properly, they CAN and will
still get to the other side. The top of the divider needs to touch the tank lid, so there is no possible way they can jump over.
I say do whatever your heart suggests. I know if I took peoples advise seriously here all the time, then I would not have the tank setup I have now in which has had no betta casualties, or life threatening situations. The only time I see them 'act up' is when I slack on my water changes, and the levels become off theyre norm. This makes them grumpy and easily agitated.
Bettas were my thing, so I stuck with them and got more. Id say it depends on what YOUR most interested in..then go from there, If you really
want another betta...it will never subside. So Id sudjest to just try it.
If it dosent work out, then the divider should work as well...as long as its properly settup. You can buy one from a pet store, or save money and make one using two spines from project covers [glued onto tank] and a Plastic needlepoint canvas, sold at craft stores [great also for creating lids or covering holes in existing hoods].
I was a "noob" fish owner knowing absolutely nothing about fish when I got my first male VT betta. After a few months, I got him a larger home and a girlfriend, as I had told him I would when he was recovering from finrot. When I first got her, I had a divider in their 10 gal. tank to help them get use to each other safely, however, I did not permatly glue it in, nor made sure it touched the top / lid of my tank [there was approx. 2" of gap between top of divider and tank lid].
After almost two weeks, they had "cracked the code" of my divider, and started getting into each others sides.
The first day they did this, they switched sides. The second they were in same
side. Since they had been in approx a 5 gallon area together for 12+ hours w/o harm, figured they were fine, took divider out, and they have been in love and inseperable ever since. Now when I do seperate them, they both become depresses, and inactive.
I enjoyed them so much, I decided to get the other 3 females I was originally going to get with Red Petite Mermaid, but at the decided not to incase they infact didnt get along.
Of corse there was a little
pecking and chasing when I first added them, as its natural when theyre espablishing a pecking order. Wasnt long thouh that things settled down. My tank was overpopulated with guppies [given to me from old boss], so I think that helped with the adjustment, as there was so many fish...too much distraction. I have since removed / given away many of the guppies, and the community still seems to be doing well.
But keep in mind, "Betta personality varies. Some bettas are shy and easily stressed. Others are aggressive and outgoing." This means that while some tank settups, such as mine are successful, not all of them always are. In thouse cases, tank dividers or seperate tanks are the only answer...but you'll never know unless you try ;D
key seems to be the size of the tank, the decorations within, and supervising them to watch for any signs of a betta that is infact 'aggressive and outgoing'