I kept these about a decade ago, they are great fish, but can be prone to bloat if stressed by less than perfect water quality, or aggression.
I have also kept bartoni, and if I were to do it again, I probably wouldn't keep them in the same tank, unless was a relatively large one, to minimize territorial stress, maybe minimum 150 gallons (probably more).
Although the bartoni are/and stay relatively small, they are feisty, and although they are found together in nature, that amount of space is gargantuan, compared to even very large tanks.