if they are in fact coming from oversea's then they "might" be tank bred. i member watching a video on youtube and people in taiwan has bred them i believe. but for some odd reasons they dont look exactly like the wild altums. have same body shape but the bars are off. also like 3dee said. sometimes people get mixed up with wild peruvian and altums as they have a lil similiarities.
as for my altums, i have no idea what my water parameters are. cuz i never check. im old school and check water quality based on the looks and smell of my tank. i did treat them when i got them. and they are kepted at 84 degrees with other tetra's. afew of them did looked sick cuz they werent eating and the other ones outgrew some of them. i didnt do anything to them and now they are fine and eating aggressively.
as for my altums, i have no idea what my water parameters are. cuz i never check. im old school and check water quality based on the looks and smell of my tank. i did treat them when i got them. and they are kepted at 84 degrees with other tetra's. afew of them did looked sick cuz they werent eating and the other ones outgrew some of them. i didnt do anything to them and now they are fine and eating aggressively.