A few days ago I purchased 5 Amano shrimp and added them to my 29 gallon moderately planted tank. Water quality appears good (0/0 NH3/NO2, < 5 ppm NO3). There is a betta in the tank who is perfectly healthy.
When I first added the shrimp they swam around for a few minutes then settled down on plants and on the substrate. The betta swam at them a bit but didn't attack and after about 5 minutes stopped paying attention to them.
Yesterday and the day before each had single shrimp sightings - one shrimp just hanging out on a plant or on the driftwood looking fine. Today I haven't seen the shrimp at all. I've looked carefully in the plants and under the driftwood and there's no trace. They could definitely be hiding or dead and hidden, but I thought they would be more active eating algae all around the tank.
Do they normally hide like this? Is this a sign that they're stressed? Or maybe I'd just see them more often if there were more shrimp?
I would like to add more but I want to make sure they will be successful.
Here is a picture of my tank. I suspect the water was cloudy because I had moved plants around but I am not totally sure. This picture was taken yesterday and today it is a bit clearer:
A shrimp on the banana plant. Not much smaller than the betta:
When I first added the shrimp they swam around for a few minutes then settled down on plants and on the substrate. The betta swam at them a bit but didn't attack and after about 5 minutes stopped paying attention to them.
Yesterday and the day before each had single shrimp sightings - one shrimp just hanging out on a plant or on the driftwood looking fine. Today I haven't seen the shrimp at all. I've looked carefully in the plants and under the driftwood and there's no trace. They could definitely be hiding or dead and hidden, but I thought they would be more active eating algae all around the tank.
Do they normally hide like this? Is this a sign that they're stressed? Or maybe I'd just see them more often if there were more shrimp?
I would like to add more but I want to make sure they will be successful.
Here is a picture of my tank. I suspect the water was cloudy because I had moved plants around but I am not totally sure. This picture was taken yesterday and today it is a bit clearer:

A shrimp on the banana plant. Not much smaller than the betta:

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