Cardinals are native to the Amazon basin in South America and occur in two distinct populations. Firstly, the most prolific location is around Manaus in central Brazil, primarily in the Rio Negro and its tributaries. The second distinct population is in Columbia in the Rio Meta and its tributaries. Most supplies to our trade are from wild-caught fish and as such the supply is regulated by flooding and other natural phenomena. Cardinal tetras are a peaceful fish preferring soft & slightly acid water.
