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Lost shrimp eggs?


CT_
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I noticed about 10 days ago my biggest shrimp was berried.  she disappeared for the last 2-3 days and I found her again today but with only 4ish eggs left.    She's been with 4 other females until the 27th of feb when I added 12 more shrimp, presumably some male.  It seems unlikely the eggs hatched given the time line.  Does anyone have an idea what happened.  my temp is 24C-25C depending on the thermometer, nitrate 5 (up to 15 max when i dose ferts) gh 6-7 kh4. 

here's the best photo i could get of her

PXL_20210319_020223419.jpg.5878fb49965b4b8934ca95350fd1cd1e.jpg

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That's a bummer 😞.  I didn't even do a water change but, I've been trying to get my nitrates up and more steady for plants/algae.  maybe the dosing of easygreen was too fast?  I tried a triple dose to get from 5 to ~15.  I'll spread doses out next time i need to make bigger changes. 

Edited by CT_
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Most of my tanks have cherry shrimp and I'm guessing 90%+ shrimplets get eaten by my fish. The shrimplets that survive are usually the best at hiding and they're so small and clear, I don't even see them until they get their color. If she was with males as of February 27th it's possible that most hatched and the 10%> survivors are hidden in the substrate/decor. I've moved so many berried females around, you'd think it would cause them stress but I've never seen them drop their eggs but I'm sure it happens every so often if a fish is really bothering them.

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  • 2 weeks later...

Thought I'd come back and update this thread.  I was doing some maintenance today and moved a piece of wood and spotted two baby shrimp.  maybe the size of a rice grain and fully deep blue.  I never noticed them before because they're about the length or a bit shorted than my gravel and my gravel is multicolored (natural) so they blend in.  "the internet" says it takes about 2 weeks to get color in babies so if they're two weeks old it aligns with the day I noticed the eggs "getting dropped".  All this is incredibly tight timing, I added males on the 27th of feb and got hatched babies 3 weeks later.  That or I had a male and didn't know.  3 week hatch time is pretty fast from what I've read so maybe my water is hotter than I think it is. my thermometer/thermostat says 24C, but my cooking thermometer says 78F (25.5C), so now I'm inclined to believe my cooking thermometer. 

 

In retrospect I hope I didn't gravel vac any, but I've mostly been vac'ing open areas.  In any case I'm thrilled about the 4-6 I spotted after looking around some more and who knows how many are hiding.  Could be 50 more 😉 (the mom was BIG)

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well, here's another update.  Its been a day or two and now I'm spotting baby shrimp everywhere.  I've noticed the tetra try and take a bike but the babies can "jump" away REALLY fast and I think they're too big for tetra mouths now, perhaps that's why they've become brave.  I think maybe my two batches of "blue dreams" came from two different lines because I'm getting all kinds of colors.  Here's some photos, the leaves there are montecarlo (except the last photo) with hair algae to give you an idea of scale and the gravel is green-pea sized.

 

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