Amano shrimp disappeared!

[odd-faust]

I recently bought 6 healthy looking amano shrimp form petco and added them to my 10 gallon tank, but after two days they all disappeared! I can't find any of them, but I don't see any bodies so I don't think they're dead? Please help! I literally don't see them anywhere!

Water chemistry was 0 ammonia, 0 nitrite, 20ppm nitrate, ph 7.8, and temp 78 F before adding the shrimp via slow drip acclimation over 2 hours, letting the bag sit in the tank during the process.

My 10gal tank has:
7 beckford pencilfish
3 pygmy Corydoras habrosus
3 otocinclus
2 nerite snails (purchased)
1 ramshorn snail (hitchhiker)
1 unknown snail (hitchhiker)
and 2 baby spiral cone snails (hitchhikers)

Decor:
very small gravel (smallest size before sand)
floating anachris (the shrimp aren't there from what I can see)
nana anubia on wood
some grass in the gravel
chola wood (no shrimp there either)
baby java fern sprigs

 

[sobersteve323]

If they’re young and small they could be hiding in your plants really well. I have two older ones that are about 2” long and sometimes I can’t find them for days and they’ll pop up out of a plant. Sometimes I’ll be looking for 5 mins and not notice them on a leaf right in front of my face. Some of my smaller ones I can barely see if they’re cleaning the substrate.

Do you have a lid on your tank? I’ve read stories about them crawling up filters to check out what’s above the water line. Although I’ve never had mine do that and I frequently keep my lids open in the summer when it’s hot.