Hi everyone! Long time lurker here, and finally posting because I'm a bit sad and wanted to at least share what I learned today. I lost one of my sunburst platy because when I woke up this morning, I found him stuck in one of the crevices of the live rock that I set up as decoration in the tank, and after releasing him, found that it was already too late for him. I'm rearranging today to actually make sure there's sufficient room. But it would seem that if they can wedge themselves in there, they very well may do so.