ID Request

[monocus]

what they are are Cassiopeia,upside down jellyfish.i use to get them in the hundreds-basically harmless.i figured i was getting them from my brine shrimp eggs

[Myka]

Originally Posted by monocus

what they are are Cassiopeia,upside down jellyfish.i use to get them in the hundreds-basically harmless.i figured i was getting them from my brine shrimp eggs

I'm pretty sure what you're thinking of is hydroids, which are a very common contaminant in Brine Shrimp eggs, and have a medusa (larva) stage that resembles jellyfish. Unless the OP has adult Upside Down Jellyfish in his tank, the odds of these being larva from said species is extremely slim.

[monocus]

nope.i actually raised them till they were over 2 inches wide,from the photos,they are upside down jellies

[Myka]

Originally Posted by monocus

nope.i actually raised them till they were over 2 inches wide,from the photos,they are upside down jellies

That is really bizarre, and theoretically nearly impossible. Some jellies can reproduce asexually (like fragging), though I don't know if Upside Downs do, and the polyp shown would have to be the product of sexual reproduction. Got pics? I'd love to see how they matured! Did you find anyone else documenting this too?

[DKoKoMan]

I have yet to observe them in my DT, but they seem to congregate in the return section of my sump. I'm guessing it's just too hard to spot the tiny guys in the DT with the LR, or they are getting eaten.

[monocus]

Anthony -sea horse fanatic might have some photos as i gave a bunch to him for his children

[DKoKoMan]

???