Join Date: Oct 2010
Location: Victoria, Australia
Most of the bigger species should be okay in slightly harder water (species such as ideii, unimaculata, ocellata). I think channoides and albimarginata are also quite tolerant. They might not spawn for you, but they shouldn't suffer any health effects from it.
If you get something wild-caught then it's probably going to be much more sensitive to water parameters, but some species have been bred in fairly large numbers by wholesalers and are more adaptable.
For something like a burdigala you want very dark, very soft water with lots of cover and subdued lighting to get the beautiful burgundy colouring. I just let my leaf litter decay as this provides plenty of micro-organisms for any fry (this complex will not usually eat their own fry) that might be born.
They can be fussy with food. I am just weaning some of mine off a sole diet of frozen/live and onto pellets.
These are not the kind of bettas that do well in tanks with rainbow coloured gravel and sparse decorations. I've gotten the best colouration and behaviour from my wilds in biotope style set-ups.