What Is This? 20 Gallon Tank 

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Kathryn Crook

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I have and know copepods and seed shrimps but this kind I dont know. Its only in my 20 gallon long that has a new colony of blue dreams, some CPO dwarf orange crays and micro crabs. The tank is approaching 6 months old. They are black and white striped, a bit bigger then cyclops. I can’t find any info on them. Does anyone know exactly what they are?
 

WTFish?

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Oh weird, following for answers. Are they bug like?
 
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WTFish? said:
Oh weird, following for answers. Are they bug like?
Yeah, I suppose so. They are stumping me. Idk where I got them. I hope they arent harmful. This tank is struggling to thrive.
 

midna

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looks like just a different type of seed shrimp
 
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midna said:
looks like just a different type of seed shrimp
Thats what Im hoping for. I find it really strange that I cant find any info on them, and unlike the little white guys which cant be seen easily on plants, these darker ones are much more prominent and frankly kinda ugly settling all over my plants like flies. All those little black dots are bugs.
 

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Heres a vid of them. Fascinating..
 

WTFish?

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So strange. It doesn’t even look like they’re underwater. Lol
 

richie.p

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Gigantocypris a bigger version of seed shrimp
 
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richie.p said:
Gigantocypris a bigger version of seed shrimp
Im googling them and cant find a correlation.
 

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I think it's like most hatches they peak and feed thdn die off, I look at it as your tank is thriving which is a good thing, if it were a fish tank you wouldn't see them its because its a shrimp tank with no predators they are able to thrive
 
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richie.p said:
I think it's like most hatches they peak anx fir off, I look at it as your tank is thriving which is a good thing, if it were a fish tank you wouldn't see them its because its a shrimp tank with no predators they are able to thrive
Someone else thought they may be water fleas? Is that just another name for seed shrimp? I look them all up and it doesnt seem to be much different.
 

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That's also a possibility they look the same and get big so you can flip a coin on this one I think
 

richie.p

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This is a better read than the first I posted.
Water flea are a look alike but are in fact a different species
Ostracods, or ostracodes, are a class of the Crustacea (class Ostracoda), sometimes known as seed shrimp. Some 70,000 species (only 13,000 of which are extant) have been identified,[1] grouped into several orders. They are small crustaceans, typically around 1 mm (0.039 in) in size, but varying from 0.2 to 30 mm (0.008 to 1.181 in) in the case of Gigantocypris. Their bodies are flattened from side to side and protected by a bivalve-like, chitinous or calcareous valve or "shell". The hinge of the two valves is in the upper (dorsal) region of the body. Ostracods are grouped together based on gross morphology. While early work indicated the group may not be monophyletic;[2] and early molecular phylogeny was ambiguous on this front,[3] recent combined analyses of molecular and morphological data found support for monophyly in analyses with broadest taxon sampling [4]
 
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richie.p said:
This is a better read than the first I posted.
Water flea are a look alike but are in fact a different species
Ostracods, or ostracodes, are a class of the Crustacea (class Ostracoda), sometimes known as seed shrimp. Some 70,000 species (only 13,000 of which are extant) have been identified,[1] grouped into several orders. They are small crustaceans, typically around 1 mm (0.039 in) in size, but varying from 0.2 to 30 mm (0.008 to 1.181 in) in the case of Gigantocypris. Their bodies are flattened from side to side and protected by a bivalve-like, chitinous or calcareous valve or "shell". The hinge of the two valves is in the upper (dorsal) region of the body. Ostracods are grouped together based on gross morphology. While early work indicated the group may not be monophyletic;[2] and early molecular phylogeny was ambiguous on this front,[3] recent combined analyses of molecular and morphological data found support for monophyly in analyses with broadest taxon sampling [4]
. Thanks Richie! I dont have a good enough camera to get a better look. So, garsh! Still not sure. Likely a seed shrimp variety.
 

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What else is in this tank?
 

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This was my tank and these are copepods the other photo is one I took with.a microscope and I think I can see one in your photo
 

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richie.p said:
This was my tank and these are copepods the other photo is one I took with.a microscope and I think I can see one in your photo
Same exact ones! Yes Richie! The ones on the left. I cant tell by the oneson the right.
 
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Kathryn Crook said:
Blue dream shrimp, dwarf crays, thai micro crabs, an ancient mystery snail and one new blue ramshorn snail, hehe.
Aw what a cute combo! I was thinking maybe throw a betta in to devour these aliens. Lol
 
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WTFish? said:
Aw what a cute combo! I was thinking maybe throw a betta in to devour these aliens. Lol
NOT FUNNY! /cry! Lol. Baby crays and a water spider! (Crab) hehe.
 
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