Nudibranch ? Thanks for your advise . I also heard some sounds at night I suspect there is also some mantis shrimps in there .
I observed my sea urchin and star fish sticking themself on the upper area of the tank , is there possible some natural predator out there that they may be scare of? I have some fish die off not sure if it was due to fighting each other or being eaten by some hitch hike ? I loss my old fox face and a sea urchin since I added new live rocks
Sent from my iPhone using Tapatalk