Any jellyfish experts out there?

[sixty_reefer]

Hi just wondering if anyone could give me some direction identifying these jellyfish. They have been around my tank for over two years I never seem to see the patents only budding stage in hundreds and some times a baby swimming around. The odd thing is I don’t know what it is and I can’t see a big one anywhere in the tank to explain why I see buddings often around the tank.


That’s a vid from last year I’ve got exactly the same this year

 

[Lasse]

Something is propagate in your tank - this looks like some polyps from something that probably looks different from the polyps. Could be some species of Cassiopea

Sincerely Lasse

 

[sixty_reefer]

Something is propagate in your tank - this looks like some polyps from something that probably looks different from the polyps. Could be some species of Cassiopea

Sincerely Lasse

Interesting that you mentioned Cassiopeia (upside down jellyfish) last time I’ve tried to id the budding I've stopped at Cassiopeia also but wasn’t sure as they never developed into adults. I think I will try and catch some babies this time and see if they develop into adults.
This time they multiplying their inside a reactor, will try and direct flow into a breeding net.

thanks lasse

 

[Lasse]

I tag @Sallstrom - he maybe can help out - either by himself or by others at his job (and normally mine part time job too - if it was not for the Corona breakout)

Sincerely Lasse

 

[sixty_reefer]

I tag @Sallstrom - he maybe can help out - either by himself or by others at his job (and normally mine part time job too - if it was not for the Corona breakout)

Sincerely Lasse

Thanks @Lasse, would be definitely interesting to know more about it, the budding seem odd as there isn’t a parent in the tank, and weird as they survived over 2 years by splitting. I did noticed that they explode in numbers wend I start to feed small particle foods similar to some hydroids and aiptasia.

 

[Sallstrom]

Jellyfish polyps can live for many years, and strobulate(let go of small ephyra) when it's the right time. My coworker, the Jellyman , says it can be Cassipea. But he's not 100% sure.

 

[TriggerFinger]

Very neat! Are these at all related to the hydroids we see in our tanks?

 

[Sallstrom]

If you want to try if it’s a kind of Cassiopea, you can collect the ephyra. That’s just after they are released from the polyp.
After collected, you need a tray or bucket with a small light over it. We used very small spotlights from IKEA. Put them there for a couple of days and see if they settle to the bottom. Cassiopea are usually not sensitive to swings in temp or salinity, they are very hardy. If you like, you can feed them, but they also have Zooxanthellea and will survive on just the light.
If using air bubbles, it should be very low. Like one bubble every two seconds or so. So keep the flow low.

Hydroids and Jellyfish both belong to the same phylum as corals, Cnidaria.

 

[sixty_reefer]

If you want to try if it’s a kind of Cassiopea, you can collect the ephyra. That’s just after they are released from the polyp.
After collected, you need a tray or bucket with a small light over it. We used very small spotlights from IKEA. Put them there for a couple of days and see if they settle to the bottom. Cassiopea are usually not sensitive to swings in temp or salinity, they are very hardy. If you like, you can feed them, but they also have Zooxanthellea and will survive on just the light.
If using air bubbles, it should be very low. Like one bubble every two seconds or so. So keep the flow low.

Hydroids and Jellyfish both belong to the same phylum as corals, Cnidaria.

Thank you very much was just about to ask you what the best method to bring them up. Would I need a heater in the bucket also? They have made home inside a reactor this time, would a breeding box made out of mesh be ok to collect the ephyra?

 

[Sallstrom]

Thank you very much was just about to ask you what the best method to bring them up. Would I need a heater in the bucket also? They have made home inside a reactor this time, would a breeding box made out of mesh be ok to collect the ephyra?

I think they will do fine in room temperature, but if you want to bring it up to 25 degrees, I guess you can put in a heater as well.
Since we have had Cassiopea jellyfish for many years, we have tried many ways. You can put them in floating buckets in your tank, or small buckets on a eggcrate on the tank top, to use the same light as the tank and also to heat the buckets with the tank water and/or the tank light.

I don't know how they will do in a mesh. You can try it. Otherwise a net/mesh to collect them in the water, then lift them up with a spoon or a pipett(with an opening larger then the jellyfish) to move them from the mesh(still in the water).

For how long have you had the polyps in your system? Have they disturbed any corals? When we started up a Cassiopea tank almost ten years ago, we got the advice to keep them far away from corals tanks, because the polyps would spread like crazy and burn corals. So far I haven't seen any polyps in our reef tanks, even though we haven't been very careful. And the last years we had corals, mostly soft corals, together with the jellyfish without any problem.

This was our Up-side-down Jellyfish tank back in 2018. I think most of the jellyfish were at the other side when taking this picture But it worked great for like seven years, without a skimmer, just a returnpump, heater and light. We fed daily with newly hatched artemia.

 

[sixty_reefer]

I think they will do fine in room temperature, but if you want to bring it up to 25 degrees, I guess you can put in a heater as well.
Since we have had Cassiopea jellyfish for many years, we have tried many ways. You can put them in floating buckets in your tank, or small buckets on a eggcrate on the tank top, to use the same light as the tank and also to heat the buckets with the tank water and/or the tank light.

I don't know how they will do in a mesh. You can try it. Otherwise a net/mesh to collect them in the water, then lift them up with a spoon or a pipett(with an opening larger then the jellyfish) to move them from the mesh(still in the water).

For how long have you had the polyps in your system? Have they disturbed any corals? When we started up a Cassiopea tank almost ten years ago, we got the advice to keep them far away from corals tanks, because the polyps would spread like crazy and burn corals. So far I haven't seen any polyps in our reef tanks, even though we haven't been very careful. And the last years we had corals, mostly soft corals, together with the jellyfish without any problem.

This was our Up-side-down Jellyfish tank back in 2018. I think most of the jellyfish were at the other side when taking this picture But it worked great for like seven years, without a skimmer, just a returnpump, heater and light. We fed daily with newly hatched artemia.

thanks for all the info, your a star. The mesh idea is just to collect them before they disappear in the pumps like usually they do. Then will transfer them to a small nano round thank with a bubble to try and get them to grow and finally see what they are.

the polyps been around the tank for around two years they always in low light areas for some reason. They got in as hitchhiker I believe.
I’ve saw once around 2 years ago a black jellyfish swimming around the tank and disappeared in the return two months before I started seeing buddings. It was just black and probably half an inch in size. Never seen it again since. Does this description ring a bell.

the set up looks crazy would like something like that wend I move house soon.