I think individual fish within the genus behave very differently. Some are very calm and some are rambunctious and some are somewhere in between.
My RTG is rambunctious but he has never attempted to jump out of his tank. He simply gets excited and bangs the lids occasionally, losing a scale or two in the process. The Chilli Red was bond and determined to get out of the tank, one way or another.
I have yet to come across any good english book on arowanas other than picture books. I haven't really looked hard though. There re a number of books produced in the far east in asian languages, but alas they are no good to me, lol.
One option for you would be to check out all the arowana videos on youtube. There are quite a few taken with wild south american aros.