Originally Posted by Jayy
okay so what do you recommend?
I don't like to recommend specific fish too much, as it is your tank, but some general ideas assuming you have a BN pleco, livebearers, the cherry barb [I would add to this group, 7-8 would be nice], and maybe the killifish: Danio [there are several species not just the Zebra, all are active fish but that is fine with the afore-mentioned], medium rasbora [there are several species here too, just avoid the dwarfs like Boraras], medium tetra [many species aside from Black Widow and Serpae (also fin nippers)]. Another barb like the Black Ruby Barb, this is a beautiful fish and for a barb very peaceful. You have room for substrate fish along with the pleco, maybe a group of corys, or a group of one of the smaller loach species (Botia striata, Botia kubotai, etc) for some real entertainment. If you don't stay with the killifish, surface fish like hatchets would work with this combo.
From among these groups, several manage in your slightly basic water that livebearers need, so avoid the wild-caught soft water species and you're fine. Many of these are in the profiles with photos.