The next tank i get will be custom made hopefully and much longer than tall. I didnt really think about it when i bought the tank since i got it at a good price. Now i have a hard time trying to rescape it since i cant properly reach the bottom haha.
It sort of sounds like this but all the angels are in healthy condition (except one which is wonky lol). There not biting there fins sort of like exploring them and feeling there sides with there mouths if that makes sense.