what are these things in my plant/snail tank?!?!?! - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 11-08-2014, 06:11 PM Thread Starter
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what are these things in my plant/snail tank?!?!?!

all on the glass, anyone know?



75 Gallon Low Tech w/ Green Terror Pair
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post #2 of 5 (permalink) Old 11-08-2014, 06:13 PM
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Hydra.
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post #3 of 5 (permalink) Old 11-08-2014, 06:23 PM Thread Starter
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what is hydra? dangerous?

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post #4 of 5 (permalink) Old 11-08-2014, 07:09 PM
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They will eat shrimps and small animals in the tank, so yes they can be dangerous. Interesting little creatures though.
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post #5 of 5 (permalink) Old 11-08-2014, 07:52 PM
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It normally eats cyclops and daphnia.
It's a micro-invertebrate useful in studing ecotoxicology. The Freshwater Hydra (Hydra attenuata): Useful in Ecotoxicology
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