Since some time now I have this "nano cube aquarium" on my desk with little shrimps (crystal reds) in it. They are really fun! Very nosy and actively digging around in the gravel. They pick up a gravel, search for food and when done, they throw it away. Shrimps are very social and like to be in company:
When they have a good day, they even play games. Here they are playing hide-and-seek
:
One shrimp carrying eggs died last week so we got the eggs carefully out. In the past days some of the eggs had to be thrown away since they were not good anymore. By today we had only 19 of 31 left.
But...
Today the first little shrimp was born and healthy! The little one is very tiny.. only 2 mm!
To compare I pasted in an adult shrimp: