Found something strange in the tank - The Planted Tank Forum
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post #1 of 12 (permalink) Old 12-30-2017, 04:38 PM Thread Starter
Algae Grower
 
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Found something strange in the tank

anyone know what it is?
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post #2 of 12 (permalink) Old 12-30-2017, 04:59 PM
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Damselfly larvae?


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Growing is not that difficult.
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post #3 of 12 (permalink) Old 12-30-2017, 05:08 PM Thread Starter
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Yup that's what it looks like, never knew something like that existed.
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post #4 of 12 (permalink) Old 12-30-2017, 05:24 PM
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I did a quick search for damselfly images and found what looks just like your picture.

I could not say if they were a danger to your shrimp or fish though. If I found one I think I would be delivering the coup de gras just to be on the safe side, unless those with more experience of them can advise otherwise.

I found this info on another site

>>I put a few tadpoles from the pond in a 2L jar with some water, weed and some other fauna. One of which was the damson fly larvae to watch one day.

The larvae proceeded to eat almost every single one of the tadpoles it could lay its hands on. Wouldn't recommend leaving it in with your other livestock<<

https://www.google.com/search?q=Dams...YHITqizCl6eIM:

Take only pictures, leave only footprints.

Last edited by StevieD; 12-30-2017 at 05:27 PM. Reason: More info.
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post #5 of 12 (permalink) Old 12-30-2017, 06:00 PM
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They are carnivorous and will eat small fish and shrimp.


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post #6 of 12 (permalink) Old 12-30-2017, 06:02 PM
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I imagine it will happily eat baby shrimp, not sure at what point the size cut off would be but I wouldn't risk it.
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post #7 of 12 (permalink) Old 12-31-2017, 05:41 AM Thread Starter
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dang it. cant find it now
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post #8 of 12 (permalink) Old 12-31-2017, 06:21 AM
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Could even be a small dragonfly larva. I get dragonfly larva in my pond. They help keep the goldfish population from getting out of control. They take 2 years to get full grown and eat a lot of baby goldfish, get to about 3 inches long.
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post #9 of 12 (permalink) Old 12-31-2017, 11:14 PM
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Quote:
Originally Posted by ac21 View Post
dang it. cant find it now
Yeah, get it out of there it'll decimate your shrimp population. Good luck!!!
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post #10 of 12 (permalink) Old 01-04-2018, 08:32 PM
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Kill it with fire!
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post #11 of 12 (permalink) Old 01-04-2018, 09:05 PM
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That looks terrifying. Kill it and move a state over just to be safe
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post #12 of 12 (permalink) Old 01-04-2018, 09:28 PM
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That's a damselfly larva. It'll eat small shrimp, but doesn't get big enough to endanger any fish other than newborn fry. Probably came in either on plants from outdoors or as an egg laid by a damselfly.

Dragonfly larvae get large enough to threaten fish, but are much fatter. That's not one.

To find it, check the plants, especially in less well-lit areas. Sit quietly and watch for movement, they're lurking predators.
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My current project, a 65 gallon aquarium stocked with vernal pool fauna.
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