I started up a brackish, half strength seawater, one gallon tank about 6 weeks ago. Actually it was a month before that when it got set up but 6 weeks ago is when the first shrimp went in. I started with 8 shrimp from the guy who runs the "Supershrimp" forum and then 2 weeks later got 8 more from a seller on eBay. The tank currently has 16 shrimp, a Horned Nerite snail and 2 pieces of macroalgae that is growing nicely. There is no heater or filter and I only top off the water with distilled when needed. They get fed maybe once a week but they say you really never have to feed them or do water changes and they can live up to 20 years. Today I noticed 2 heavily berried females. I had one a couple weeks ago but she lost the eggs. I'm keeping my fingers crossed that maybe this time I will get some babies.
The Zebra Nerite is just an empty shell that I superglued to the lava rock. The live Horned one is a lot smaller.
The same thing happened to me but they will be okay. I had a female just drop her berries and found 2 other females who also have berries.
I have a 3 gallon jar with a lot of Opae, you’re gonna love them.