My "guess" would be bta...but a little one. I'm definitely no expert though...but my condi had the tips a little different colored, and my bta's are the same color at the tips. The tips of yours also look very rounded as my bta's do (mine don't "bubble" much...they tend to stay straighter as yours are). Your clowns are also interested in it...my clowns wouldn't go near my condi but love the bta's.
That's just my opinion though...and as I said, I'm definitely not an expert (or even that knowlegeable, haha).