No it is not the arapaima tank, but there are a number of photos of that exhibit in the ZooChat gallery. The Amazon section of the aquarium has a number of tanks (arapaima, bats, electric eel, pacu, piranha, catfish, marmosets, anaconda, etc) as well as a mini-rainforest area with ibis, tortoises, sloths, lizards, etc.
The Vancouver Aquarium has a tank with an anaconda that is mainly all water, which is great to see for that species, as well as a decent Amazon section. The Shedd Aquarium, which incidentally is a spectacular establishment and my favourite aquarium that I've ever visited, has an amazing zone called Amazon Rising that has many outstanding exhibits. There are also other aquariums that have smaller Amazon areas with the usual specimens: piranhas, pacu, anaconda, etc.