What...ARE these?

Squeakfish

Fight the current!
Jan 9, 2008
837
0
0
SoCal
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They currently inhabit all three of my tanks. I have no clue what they could possibly be.
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This is a crypt. parva being taken over by them.
....Oh god.:1zhelp:
 
Hydra...lots of em.
 
not sure... do the fish eat them?
 
Are they dangerous? Neither of my gouramis touch them. How did they get there? And other concerned fishkeeping questions?
 
I had some hydra in one of my tanks a little while ago but it seems as if they all just disappeared once I cut the feedings back drastically.From what I heard they can sting fish but are really only a threat to small fry etc.Mine hitchhiked in on some new plants i put in tank this is what mine looked like similar to yours but slightly different

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Hmmm... those are kinda trippy.
 
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