Tetra are better off in group of 6 or more. The bigger the group the better.10 is a good start.
They should be ok in the 160ltrs tank with good filter and water change.
Ron
Most people are buying them cheaper in bulk of the internet and some are on selling them cheaper than the lfs.
No point for shop to stock them just to sell to a handful of customers. Just not worth the hassle.
Ron
Yes! they are imported from Brazil and so are Hovmoller's wild discus.
There are some small one that appeared on tm as wild are all fake and misleading.
Ron