Lost 1 Bimac Anthia out of 3, what should I do?

[HighChiefKC]

I’ve had the 3 for over a month, all 3 are females, one is showing dominance but hasn’t changed color markings at all yet. There was one that seemed to distance itself from the other 2. I noticed this week that one of them is missing now, and I assume it’s the distanced one. So my question is, how will the 2 behave now? I thought anthias were best kept in odd numbers?
Should I leave it alone?
Or Buy another?

don’t really know if it died or jumped or what happened to it. I have a eurobraced acrylic tank that I made screen covers for, but there is one small gap because of plumbing that I have fixed yet. But never found a body.

 

[AcanthurusRex]

My triplet has been a pair for years. The weaker female eventually lost out. The pair spawn continuously.