Those Harlequins are fabulous!!!
I had a chuckle reading your description of fish teeth and YES those are quite some chompers.
I am still amazed at the teeth on some of my Tang cichlids sometimes.
BTW, the pics are perfect, IMO.
Eheim Pimpette #270
Eheim Pro II 2028; Classics Series -2215, 2217, 2260, 2262; Pro 2229 Wet/Dry