Please ID these weird creatures

[John_Reef]

Please help me ID these and how to get rid of them.

 

[BloopFish]

I can't seem to view it on my iPhone. Maybe try to upload it on youtube?

 

[El_Guapo13]

Please help me ID these and how to get rid of them.

Upside Jellyfish in the Ephyra stage of their life cycle. I get them all the time. No real harm unless they land on a coral. Even then, with as small as they are they are more likely to be killed by the coral, provided they don't get torn to shred on the live rock or powerhead.

 

[John_Reef]

Upside Jellyfish in the Ephyra stage of their life cycle. I get them all the time. No real harm unless they land on a coral. Even then, with as small as they are they are more likely to be killed by the coral, provided they don't get torn to shred on the live rock or powerhead.

Thanks. Good to hear that they do no harm.

 

[El_Guapo13]

Thanks. Good to hear that they do no harm.

Their polyp forms can do some harm, just like an anemone or hydroide. I kill any that get close to my corals with Aiptasia X. The polyps that are nowhere near my corals, I leave them alone to do their own thing.

That said, that video has a whole lot of ephyra swimming around. I at most have seen 4 or 5 at once, then the filter killed them. I try every now and then to save one and try to raise it to its adult stage so I can keep a full grown Upside Down Jelly in my currently unused 10gallon. Longest I managed to keep o e alive so far is 1.5 months. Next time I see one I will try again.

Also it is interesting to watch the polyps go through the process of strobilation to release an ephyra.