True Brachyplatystoma vaillantii catfish, ~12", in 4500 gal, filmed Dec 2016. Great many thanks to Wesley Wong for bringing it in from Suriname. Got it Summer 2016 at ~7"-8". After it had added on a couple more inches in 240 gal, it went into a 4500 gal. In every tank it was, it was always intact and lacked even any slight damage to its fins, while other Brachyplatystoma, such as capapretum, platynemum, rosseauxii, in the same 240 gal with it bore some damage to the fins. I tentatively blame the vaillantii. In 4500 gal it appears to have relaxed a lot. It is still damage-free and still has two nice extensions on both caudal lobes, despite having a bunch of nipping tank mates. It really likes its cheap catfish farm pellets and was ~12" in Dec 2016. Now, in Mar 2017 it looks to have added another ~2".