Hi. My name is Danijel and I'm from Croatia, Europe. This is my red CT, only one in Croatia, and very hard to find in Europe. He's temporarily in 15G community planted tank while he's 3,5G is cycling (I think that's the right word on English). There are no problems with other fishes in tank (tetras, corydoras, badis, shrimps...), there was a day or two of adjustment with territorial and little agrresive scarlet badis (but they are much smaller than betta) but they are also doing fine now.
On picture 3 you can see sagitaria plant which is like grass in aquarium and he just loves to crawl between it leaves and taking a rest under it.
Pictures aren't the best of qualitty.