I live in Sao Paulo, its a very big town like New York or L.A.
!`m far away from the amazon.
But if i see one of those rays in a lfs aroud here i let you know
As far as Brazilian fish, it is very easy to find rtc, arapaima, wolffish, discus ...etc, etc in most lfs .But when it goes to something like the fahaka its very hard to see.