Have you ever heard of an igarape before?
It translates roughly as "canoe road" in the Hengatu dialect of the Tupi language (spoken all over the Western Amazon region), and that's just what it is: A little jungle stream that is used by indigenous people in Brazil to navigate through the rain...
I probably don't have to tell you this, but as someone who owns two fish related companies (Tannin Aquatics and Unique Corals), I hear of many tragedies that could have been avoided with a simple quarantine procedure that we all probably know...
But I'm gonna hit you on the head with it yet...