hitch hikers

Hi Everyone! I've had these zoas for a couple years and they started melting after a small purple/red polyp started appearing a few months ago. I now have this big transparent purple/red polyp with what appears to be a mouth, plus 3 others growing behind it. Any idea what could have attached...

hey guys i have a few questions on flatworms but first let me add some background information, i currently have a nano aquarium set up for a G. chiragra mantis shrimp and i has some other cuc in there as well but no corals or fish just a marine planted tank if you will dominated by macro algae...

Are these any specific Brittle Star? All of these were in one small colony of WWC Cherry Tree monti. The colony had faded over the last few months and parts where dying off. I could see their legs sticking out of the dead parts but had no idea there was this many. They agitated the Monti and it...