I've found with my curu anway, that he completely ignores fish that show no threat, and he seems to have lost any predatory drive for some massivore. In the videos of him with the Trachy you can beat him grunt very clearly since the phone is against the glass. It's loud and clear and cool lol. And as you see he's about the dice of the curupira's head and as long as the Trachy's head is wide. I am worried the Trachy may one day go on a weird predatory spree like kolt notes and try the jag out as a meal. Hopefully if that does happen he doesn't choke.Thats amazing that they dont bother the little guy