For the record.....Feeding occurred daily, or once every two days mostly krill and dry food (no feeders, beefheart, etc.); 40% water changes every 10 days, checked out water levels all time. (The fact that all the other fish are healthy, active and growing is a solid argument, since dats and juraense require almost flawless water parameters)
I didn't make any decision if I will get another aro or not, but I will definetly appreciate more info from someone who owns/raised a lei , because I'm not familiar with this aro's habits . (I read most of the posts on this forum, but they were directed on mostly how to differentiate one from a jardini)