brachyplatystoma vaillantii

Has anyone else had experience with their LauLau's [or other Brachyplatystomas] not necessarily going out of there way to chase/hurt other bottom dwellers, but becoming pretty territorial over a portion of the tank? Mine is around 6" and currently shares the bottom of the tank with two 8"...

So I purchased this guy about a month ago online and at the time it was listed as a B. Vaillantii. Even the picture online was a true Vaillantii I believe. But since then this catfish has been hiding so I couldn’t really look at him much. Well he’s gotten a bit bolder and now that I’ve had some...

Would a "Lau Lau" have any issues with living in a 9x4 tank of Peacock Bass and Datnoids until it grows to around 2' and I move it to the pond Im building? The catfish will be about 5.5" when it arrives and the Bass are all around 7" and Datnoids are 6".