Persephone like dark water but I haven't been able to change it as often as the others. The male was guarding his nest and even now when 99% are free-swimming he is obsessed with moving everyone around everywhere. I got my IAL off Dave and because they are so potent, it's gone really dark.
Wilds really aren't that difficult. Not even macrostoma. But they are fairly pricey so you don't want them keeling over or jumping out.
I've got half a dozen strohi juvies growing out (think a couple males at this point/maybe females as well) if you want to buy a couple of them anytime cheap. They are super nice looking fish when coloured up and grow to around 7cm in length. Parents were bred by a top wild breeder in Indonesia.
Since their parents were captive bred and they have been aquarium raised they are friendly, eat anything I put in there and are hardy as heck. I don't want them and only raised them because they were an 'oops' batch I found after the parents were sold.
It's hard to find good quality imbellis. Most (I had some) are poorly coloured and pretty drab. I've always found the bubblenesters (smaragdina, imbellis etc.) pretty boring but then my tastes run more to the smaller blackwater species such as persephone.