hey madscientist,
peace be upon u
I don't know about wild caught ones. Don't know how to differentiate between wild caught and farm bred. Normally I go all around singapore to see which LFS have nice stocks and I don't necessarily stick to one shop too. Some have nice endi, some don't. Goes the same for the other variants i.e. sens, albinos, ornate etc. As long as they look healthy, active and fins intact.
Normally I go to pasir ris farmway, Seaview at seletar, C328, Aquastar and Y618. I don't buy from serangoon north eventhough it's just a walking distant from where I stay.