Hi Nick, we seem to be using the same book (Reef Fishes of the East Indies). Hard corals are not listed as a substrate for this species but it is "happy" on so many different substrates that I just assumed it could be anywhere (and the top right image looked like coral to me but is maybe a softcoral). I know very little about anything without scales and tails but hope to change that in the coming month during a trip to the Philippines.
P. micheli fits better for a hard coral association but I thought the transparent body and brown stripe where characteristic.
- Nick Hope likes this