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No they aren't.No, what you're calling jellyfish are the Medusa stage of this type of hydroid
Okey dokey.No they aren't.
In europe we never had an import ban on life rock and got these all the time as hichhikers. They really are jellyfish. Crown jellyfish to be specific.
Nausithoe sp.
???Don't make the mods weigh in here.
I'm waiting for the discussion on hydroids vs Jellyfish to go fully weaponize. Ya all let me down, kinda.@KrisReef , I was serious... What is the issue that you expect the mods to need to intervene on?
Which one do you mean? I can't really see much on OPs pic except a lot of blue but the pictures of @duberii are definitely jellyfish. The givaway is the chitin tube and dense green tentacles (under blue light). Hydroids have a different apperance.Okey dokey.
Couldn't possibly be two different creatures that have a similar appearance...
Well hydroids are related to jellyfish but from a different taxonomy (they are also related to corals btw). There are hydrozoa that can also release swimmers, but these are usually missing that typical jellyfish behaviour.Honestly I thought that is what a hydroid is?
Duberii hasn't contributed to this thread so I have no idea what you're talking about.Which one do you mean? I can't really see much on OPs pic except a lot of blue but the pictures of @duberii are definitely jellyfish. The givaway is the chitin tube and dense green tentacles (under blue light). Hydroids have a different apperance.
Duberii hasn't contributed to this thread so I have no idea what you're talking about.
And you specifically said, "everyone here is indentifying [sic] them wrong all the time" which is patently false.
Yes, we are talking about the original poster's question... Why would you assume otherwise?
Finally, a few of us do actually have a bit of knowledge about the "different taxonomies" of marine life and have experience in our own tanks with the species we are identifying.
But thanks for the condescension.
@KrisReef , was that good enough for you?