Looks like a jellyfish, stings like a jellyfish… but is it?

[Lady of Babylon]

I got a lotta life forms (good, the bad, and the ugly) all visible in this small place in my sump tank at the moment. Needing an id on the things that look and sting like jellyfish… but are they? What eats them? Sorry for the camera shake! I have a medical condition.

 

[Goaway]

Looks like a jellyfish to me. Most dwarf angels will eat them. Well, most angelfish.

 

[Lady of Babylon]

Bummer I can’t get my hands on a Potter Angel if that’s true. (I have a specific regional ecosystem established.)

 

[Goaway]

Do you have more than 1? If not, I wouldn't worry too much about that one alone.

 

[Goaway]

Also, if you are worried about it taking over, you can manually remove it with a fine mesh net

 

[Pico bam]

I wish I could remember the name of this thing people post them up every once in a while. From what I remember there not harmful but considered a pest.

 

[Lady of Babylon]

Bummer I can’t get my hands on a Potter Angel if that’s true. (I have a specific regional ecosystem established.

Do you have more than 1? If not, I wouldn't worry too much about that one alone.

I have been siphoning him them out for a couple of weeks. They are quick re-producers. I’m worried that if I leave the tank alone for two weeks, they will take over. As it seems like I am sucking 5-20 of them out every other day.

 

[vetteguy53081]

Its not a true jellyfish, but rather A member of hydroids - hydrozoan jellyfish

 

[Goaway]

With the hawaiin ban, potters is very expensive. How about an african flameback? Or not possible either?

 

[Lady of Babylon]

With the hawaiin ban, potters is very expensive. How about an african flameback? Or not possible either?

Flameback is out of my established ecosystem

 

[Lady of Babylon]

With the hawaiin ban, potters is very expensive. How about an african flameback? Or not possible either?

Yeah, which really makes me mad at myself for my January stupidity and tank crash.

 

[Goaway]

Well, maybe reduce feedings? Increase some export methods. I don't believe they are harmful.

 

[Lady of Babylon]

I am experimenting with some mole crabs I caught last Saturday. They are in a separated quarantine cube indefinitely, I have been putting what I suck out in with them. I read somewhere that they like to eat jellyfish tentacles. Searching for that article, I am now not sure.

 

[Goaway]

I see they like to eat portuguese man o wars.. GL hope they can help you out!

 

[Mikedawg]

Looks like medusa stage of a hydroid; I wouldn't worry about it harming anything and it will most probably disappear soon.

 

[Lady of Babylon]

Well, they are in quantities large enough to sting my corals… the few that I have in my snails pace rebuild. I have several corals that are bleaching where the current moves these guys. This is what my tank looks like at the moment. Only five firefish dart fish gobies… and a LOT of inverts.
So far I think I have removed close to 100 today. And to make it a lucky day, I am trying to track down a hidden leak that is causing my tank to loose about a gallon of water a day. *sigh*

 

[elysics]

You need to track down the colony growing on the rock likra coral that is producing these.

And maybe don't kill it, I am sure someone would be very happy to take it off your hands, especially if it is producing medusae at this rate, would make for a nice species tank

Edit:
Google Nausithoe racemosa, maybe should look vaguely similar to that, like your jellies, but upside down attached to a stick out something that looks like a coral