Thanks y'all!
Well for now, I don't plan to change it!! Seems like he can wait another year. Will see! But I don't even want to think about catching him yet!! My god!!
But for the banging, I've put a black towel on each end of the tank, oustide of it of course, and he's not banging himself anymore! He learn to stop before the plants, they've become a reference to him, passing that, he knows...!!
And for the
water change and anything involving touching the tank, it has become a work of precision!! Almost like a surgeon work!! Mouahaha!!
Don't need to tell you that ID sharks are beautiful but very crazy fish also. No knocking, no big noise either, or else...Sharky's gone wild!!