What is this? Baby Jellyfish? Coral Baby?

[mkszolo]

Can anyone tell me what this thing is in my reef tank? It looks like a tiny baby jellyfish. Maybe it is a baby coral??? I put it on youtube. Here is the link:

https://www.youtube.com/watch?v=_Gpt...ature=youtu.be

20 gal reef, 1 year old
blue mushroom coral
candy cane coral
zoanthid type coral
clownfish
chromis
urchin

 

[rssjsb]

Link doesn't work. It says that the video doesn't exist. Can you try again?

 

[Calappidae]

Link doesn't work. It says that the video doesn't exist. Can you try again?

^


But if I had to guess, research the hydroid life cycle, it may be a hydroid in it's medusal stage going by the description.. but of course if you want to be sure you gotta fix the vid/provide some other visual.

 

[mkszolo]

fixed link

fixed link

Take two on the link:

https://www.youtube.com/watch?v=_GptUDbYY8Y

 

[rssjsb]

Sure looks like a jellyfish to me. Hydroids are not free-swimming.

 

[Bongo Shrimp]

Sure looks like a jellyfish to me. Hydroids are not free-swimming.

Actually many hydroids have a swimming medusa stage in their life cycle and that is most likely what this is. There have been a lot of people who find these in their tanks including myself and they usually just disappear.

It is hard to determine the exact species but in this thread Sushigirl shares the ID of the same thing as a hydroid in its swimming stage confirmed by Dr. Ron Shimek:

http://reefcentral.com/forums/showthread.php?t=2025176&highlight=jellyfish+hydroid

 

[rssjsb]

I did not know that. The hydroids I have seen people confuse with jellies have been the tiny ones attached to the glass that generally just disappear. I've never seen one swim like that. This hobby continues to amaze.

 

[Calappidae]

There are hitchhiking jellyfish that are actually invasive in aquariums, they look exactly like this but more blue (unless lighting) but I haven't seen that case in a long time. This is more than likely a hydroid in this case.

 

[MatteZ]

So how do you get rid of them?

 

[MatteZ]

Anybody?

 

[Bongo Shrimp]

They usually go away by themselves.