Nope, those are indeed BTA's. I have an LTA in another tank with SI True Percs, and they are very different. No verruculae (sp?) (pimples) underneath the BTAs, and from time to time, the bubble tips do develop on the BTAs. Also, the LTA has "curly-q" tentacles, while the BTA's are mostly straight with the occasional bubble tip. They are all splt from one original that Tiler had. Also, the BTA's are always attached to rockwork, whereas the LTA is constantly burrowed in the sand.
Most of my BTA's dont have the typical bubble tips. I have 4 in the black ocellaris cube, two in with my orange ocellaris and an RBTA in the same tank as the LTA (that RBTA has more bubble tips then the rest combined usually, even though it is less then 1/3 the size).
According to Tiler, these BTA's get large (8"-10") before they split, and the big one in the middle of that pic looks like it should split soon.
Most of my BTA's dont have the typical bubble tips. I have 4 in the black ocellaris cube, two in with my orange ocellaris and an RBTA in the same tank as the LTA (that RBTA has more bubble tips then the rest combined usually, even though it is less then 1/3 the size).
According to Tiler, these BTA's get large (8"-10") before they split, and the big one in the middle of that pic looks like it should split soon.