Ok so I got a small BTA today. Maybe 1.5 times the size of my allardi clownfish (1.5-2 inches). I placed the BTA in a lit corner of my tank but it has a little bit of debris on its foot and it is not opening up all the way. The debris consists of a small green branch thing and a tiny little crab claw. My concern is if that stuff is hindering its ability to open up all the way? My clown fell in love with the BTA immediately by the way and he looks like he is often times trying to open the BTA up by wedging himself in it.


