One very efficient shrimp predator...
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Old 05-02-2013, 12:35 AM   #1
Asphalt Art
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One very efficient shrimp predator...


Came home today and went to go do my WC, and as I was getting ready noticed one of my females acting nuttier than squirrel doo. She was snapping in every direction trying to get away from what I originally thought was just a molt.

By the time I grabbed my net and fished her out I found out what it was. Being only about .5" long was good enough to take down a healthy 1" female. I didn't get any pictures of it at the time as I honestly took a little bit of aggression out on it after I quickly relocated the other shrimp. I don't have a clue how THAT got in there, as I am very anal about inspecting everything in a quarantine container for 24 hours minimum with bright lights.

Diving Beetle Larvae. Enough said. I basically nuked the tank and tossed anything that was in it, out. Not in the mood to play that game.

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Old 05-02-2013, 12:52 AM   #2
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Nasty looking critter.
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Old 05-02-2013, 12:59 AM   #3
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Dragonfly or damsel fly nymph, nasty bastards
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Old 05-02-2013, 01:00 AM   #4
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Also be careful they bite humans too.

And there's probably more in your tank
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Old 05-02-2013, 01:03 AM   #5
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Predaceous diving beetle larvae. Not a dragonfly larvae.

I'm doing my senior research on them. In a study, they were found to be able to consume ~40 tadpoles in a day
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Old 05-02-2013, 01:05 AM   #6
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Quote:
Originally Posted by mordalphus View Post
Dragonfly or damsel fly nymph, nasty bastards
this thing is even worse than dragon fly or damselfly larvae...
at least those things dont bite people!

diving beetle larvae are NASTY buggers... and they get HUGE.
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Old 05-02-2013, 01:32 AM   #7
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Quote:
Originally Posted by Kyguylal View Post
Predaceous diving beetle larvae. Not a dragonfly larvae.

I'm doing my senior research on them. In a study, they were found to be able to consume ~40 tadpoles in a day
Your research is spot on. I have an older cinder block pool on the property I haven't got around to dozing in. Right now the thing is full of tadpoles from Green Tree Frogs, Southern Cricket Frogs, Green Frogs, Toads and probably 10 other amphibians. Last week I was out attempting to trim back the overgrowth in there and watched a tadpole get destroyed by one of these (thus why I know what they are). That one was over an inch long and took down a legged, but still full-tailed, Cricket Frog tadpole.

I also noticed that pool has probably millions of pond snails and bloodworms (midge larvae)
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Old 05-02-2013, 01:36 AM   #8
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And there's probably more in your tank
Nothing in that tank anymore other than the smell of MEK. I was planning on resealing it anyways (sloppy factory job).
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Old 05-02-2013, 02:15 AM   #9
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Default Re: One very efficient shrimp predator...

Were would you get these from

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Old 05-02-2013, 02:19 AM   #10
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Dang thats a mean looking sucker. I probably would have nuked the tank too.
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Old 05-02-2013, 02:25 AM   #11
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Were would you get these from
The only thing that comes to mind is my 7 year old boy, and it would be futile at this point to attempt to "extract" the information from him.

Other possibility is that an adult flew into the house one night following light sources, only landed in that one tank (out of the 7 over there) and left without a trace after leaving it's hellspawn. I just searched the windowsills for a dead adult and came up with nothing.

Either way all tanks are all being covered from now on to prevent either possibility from occurring again.
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Old 05-02-2013, 05:55 AM   #12
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Beetle larvae! Never would have guessed, haha. Cool how similar they look to damsel fly larvae. Yeah, I remember the first time I picked up a dragonfly larvae here in my pond... Big mistake, that sucker took a chunk out of my finger! That looks like it would do something similar
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Old 05-02-2013, 10:59 PM   #13
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Yikes! How disgusting! Glad you got that out of there
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Old 05-03-2013, 07:22 PM   #14
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Ahh I used to find dragonfly larvae in my creek, looked very similar. Nasty little buggers even ate tadpoles! I definitely would tear any tank I had apart if I found one of those.
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Old 05-03-2013, 08:02 PM   #15
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So how many shrimps did you lose to this critter?
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