I have a whitetail in my 75g. He was to be my centerpiece fish - they are beautiful, but mine is a bit of a jerk and has taken out a couple of diamond gobies and has been picking on my Solar wrasse. So, I’m not as happy with my decision now a year and a half later. I like my Solar Wrasse and One Spot Foxface more.
So I have a 75g, currently have Tomini Tang, Coral Beauty, Lyretail Anthias, Black Ice clown, Fire Shrimp. Pics are White Tail Tang that is next addition. I am moving to a 150 in 6 months, so also will be adding a Majestic or Regal Angel juvenile to grow out. Will move all to 150. If I wasn’t going bigger I’d still do white tail, but then one or two smaller fish instead of Angel.
Maybe a 150 will be big enough - but my understanding is a Tomini and Bristletooth may not work together.