Anyone ever seen this before? - The Planted Tank Forum
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post #1 of 7 (permalink) Old 08-28-2018, 07:52 AM Thread Starter
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Anyone ever seen this before?

Suddenly these things have been popping up in my 20 gal. My tank is located in the basement so I don't know if it's some larvae of some critter or what but this is the first time I've seen this thing. Atm it's in my shrimp tank, is it dangerous to my shrimps? What is it? Any ideas how to deal with it?
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20gal. - Bloody Mary Shrimps, Anubias Nana, Xmas Moss, Amazon Sword

10gal. - Pea Puffers, Cherry Barbs, Ghost Shrimps, Xmas Moss, Anubias Nana
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post #2 of 7 (permalink) Old 08-28-2018, 12:59 PM
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It's a bit tough to tell, but it looks like a water tiger to me.

If that is the case, they should be removed, since they are predatory.
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post #3 of 7 (permalink) Old 08-29-2018, 05:22 AM Thread Starter
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Originally Posted by DaveK View Post
It's a bit tough to tell, but it looks like a water tiger to me.

If that is the case, they should be removed, since they are predatory.
I don't believe so because it doesn't have any legs. It looks more like a skinny caterpillar. And I believe I've seen a shrimp picking at one of the smaller ones before. But this one is bigger so I'm nervous about what it may be capable of doing to my shrimps. Hopefully someone may know.
Plus, it doesn't seem to need to surface as they seem to stay submerged for a long time but I have noticed some on the inside of my glass top.

20gal. - Bloody Mary Shrimps, Anubias Nana, Xmas Moss, Amazon Sword

10gal. - Pea Puffers, Cherry Barbs, Ghost Shrimps, Xmas Moss, Anubias Nana
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post #4 of 7 (permalink) Old 08-31-2018, 01:21 AM
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Drain fly larvae?... I sometimes have to fight drain files and their larvae, they crawl above the water line, lid, and filter, then fly out once mature. Their larvae can only last a few hours under water however. Maybe I’m wrong, they could be another type of bug.
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post #5 of 7 (permalink) Old 08-31-2018, 02:31 AM
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When in doubt, get it OUT.

Tank On, Mike-
60g Marineland Community, Finnex Planted+ 24/7, Silica (pool filter) sand.
10g, 29g, & 37g fry grow out tanks, 110g stock tank.


What came first, the chicken or the egg. It was the egg, but not the egg of a chicken.

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post #6 of 7 (permalink) Old 10-02-2018, 04:23 AM
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Yeah it looks like drain or moth fly larvae. Any chance you've seen mini moths flying around in the basement where the tank is? But agree with AbbeysDad...when in doubt, get it out.

https://bugguide.net/images/raw/PKR/...TKWQHS4KJ0.jpg

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post #7 of 7 (permalink) Old 10-06-2018, 05:21 PM
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When in doubt, get it OUT.
This should be on a t-shirt.
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