There is a show with jumping arowanas called "Secrets of the Golden River", don't know if that's the one you're talking about.
Amazon Abyss isen't on often, your best bet on seeing that would be to check out the show listings on discovery.com
I saw someone mention the rift lakes as well. There is a Nat Geo show called "Jewels of the Rift", excellent show on Tang. cichlids. Not on often, check the listings on nationalgeographic.com