Caquetaia spectabilis for me. I bought three of them a while back and they all died of the same fungus, one by one. None of them responded to meds either. I also had a 10" female jaguar die because it could stand up to anything, it got bullied to death (to put it lightly).
with that stock iam not surprised.......
havent got spare tank so unfortuatly thats thats,,,,,got about 20 fry 1day left to free swimming,,,
this is the 13th batch
my tap water is 50 - 75, that is with tablet tests and liquid tests