I currently have a 10 gallon divided in 2 for my male bettas Oberon and Romeo. I have a small female betta (she's growing like a weed!) in a 2.5 gallon. I have debated for a while now starting a sorority, and maybe she could be one of the females.
That said, I'm trying to think of the cheapest and safest way to organize my fish. I'm debating between getting two new 5 gallon tanks for the boys, so they don't lose space, and using the 10 gallon to start a sorority with maybe 6 females. However, I don't want to use the 10 gallon if it'll be too cramped. I know that's the minimum size for a sorority, so I've wondered if I should just leave the boys as is and buy a 20 gallon for the sorority... I'm not sure which option is cheaper, but price can be outweighed by how much upkeep is required or now happy the fish will be (the latter being the most important!)
The minimum for sororities is ten gallons... I would say that a well planted ten gallon is better then a less dense planted twenty gallon. Yes, more room is better... But it certainly can be done in a smaller tank.
Tail biting has no one cause, and keeping him in a separate tank may or may not help.
Looks like so far people think getting a 20 gallon would be best for a sorority... And petsmart currently has some pretty good deals on aquariums so I think that will be the way I go. How many females could you stock in a 20-gallon (I'm going to use silk plants, I have a tendency to kill plants that aren't aquatic and I don't want to risk killing aquatic plants and having a sorority meltdown because of it)?
And I'll be getting more décor for Oberon and Romeo's tank, because I think that might help with the tail biting. Then again, Oberon is a veil tail and his fins have grown really long pretty quickly, so he might just be annoyed by the extra weight. I love him anyway, he has a grumpy personality and always swims to the front when I come up to the tank <3
For your sorority, you need to make it very dense and have cover on all three levels, and all three dimensions ( bottom, middle top) ( forward, middle, back). With my Sorority, I have at least 1 hiding spot for each of them. For 20 gallons, you could stock a sorority with 8-15 females. My 10 gallons has 4, but I am probably going to get 1 more. I like the principle of 2 gallons a fish, I think it prevents everyone from getting crowded. Silk plants will work.
I'd go with a 20g for sorority (bigger the better). Silk plants and caves should work if your in a rush to get it going, instead waiting for plants to grow. My sorority tank heavily planted like a jungle and few nips and bites will happen, but after awhile my girls are starting to swim with each other and it's very lovely to watch.
Yeah, I was thinking of getting somewhere between 8-10, that way there would still be quite a few in there if one or two were too aggressive and had to have separate accommodations. I'm going to wait until Petco has another "dollar per gallon" sale and hopefully get a 20-gallon long, bc I've read on here that those are usually better for a sorority than the regular high tanks.
On another note, I'm repainting and finishing an old dresser so I'll have a better place to put the tank in my room. I don't think my mother has any idea that the motivation behind this is to put an aquarium in there. Mwuhaha!
If you have a spending limit, I would suggest a 10g + a ton of plants. Since 10 gallon tanks are significantly cheaper in terms of dollar per gallon and you will have more money to spend on décor, hiding spaces, and plants which will be important.
If you have a huge amount available, then I'd suggest the 20g. Of course bigger is better, but in terms of fish tanks I feel like anything above 10 gallons is bigger for a lot more expensive!