Hitchhiker, What is it?? - The Planted Tank Forum
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post #1 of 6 (permalink) Old 08-03-2017, 10:16 PM Thread Starter
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Hitchhiker, What is it??

I have found two of these in my tank the last two weeks, both while cleaning my tank. They were both solid black, nano shrimp size, 4 legs, 2 antennas, and what looks like a rear end stinger. They swim very fast. I have never seen one during the day and I spend many hours watching and prunning my tank. One came out a cholla log I was removing from my tank and the second came out of a ball of java moss I was removing. The one in the picture has been out of the water now for over an hour and does not seem bothered by it.

My best guess is these hatched in my cholla logs sometime ago. I say that because this tank is only 4 months old today and the cholla logs are the only thing I can remember putting in the tank without dipping, boiling, or isolating. Now that I think of it I also did none of those things to my substrate which is Eco Complete.
Any guesses?? An ugly looking thing, reminds me of a scorpion.

I should add I can account for all my fish but I can't stay the same for my shrimp.
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The wheel turns.

Last edited by DayOlder; 08-03-2017 at 10:19 PM. Reason: Additional info
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post #2 of 6 (permalink) Old 08-03-2017, 10:25 PM
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probably Dragonfly nymph(larvae).
it takes around 1 year for them to actually become dragonflies so..if you have anything small like shrimps in your aquarium....not good.

one picture with the likes of them...

another one
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post #3 of 6 (permalink) Old 08-03-2017, 10:42 PM
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Ooh no yea it looks like you got it out but never let these stay in your tank. They can and do totally kill and eat small fish and shrimp.
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post #4 of 6 (permalink) Old 08-04-2017, 12:54 AM Thread Starter
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Dragon flies!! Would of never thought of that. I love dragon flies but not at the risk of my shrimp or fish. That kind of rules out that I got them from the cholla.
I did get some plants from an outdoors fish farm in Florida but I dipped them all in either bleach or hydrogen peroxide. Either it was to weak or the time must have been to short.

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post #5 of 6 (permalink) Old 08-04-2017, 03:06 PM
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It looks like the Argia damselfly nymph.
http://www.troutnut.com/specimen/468

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post #6 of 6 (permalink) Old 08-04-2017, 06:21 PM Thread Starter
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Quote:
Originally Posted by darklord View Post
It looks like the Argia damselfly nymph.
Argia Damselfly Nymph Pictures

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I agree. It looks very similar of not exactly like the damselfly nymph. Not being a fly fisherman I have no experience with them. The first one that jumped out of the cholla wood when it was outside the tank and started arching its back like a scopion startled me and I immediately killed it without thinking, thus no picture. I have been stung numerous times by scorpions and while they don't seem to have much effect on me I would just as soon avoid them. The second one did not surprise me as much so I caught it. I'm hoping only the two.

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