Jelly fish

[Rossij101]

I have a tiny jellyfish creature that I have watched grow from a tiny minute thing.None of the fish eat it any one know what it's likely to be,could it grow to become dangerous to my fish or even me it's seems to appear from nowhere

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[trackfast]

Could you post a pic of it?

 

[Rossij101]

Too small at the moment I think and moves round too quick with the strength of current

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[Innovator]

Most likely a type of hydroid jellyfish that often disappear before you even know they're there. Google Hydroid Jellyfish and I'm sure you'll have something similar.