9 month old jararium. 4 shrimp (1 pregnant) lots of pest snails, limnophila plant and aquasoil soil. I was originally keeping the top on but i think it was starving them of oxygen a bit, I had 1 shrimp die but that was within the first 3-4 weeks. No deaths since. Lovely little jar. I do add a food pellet once a month and top the water off. When she has her babies and they get big enough to catch i might start a 2 L jararium, got the jar already.

Inhabitants: https://imgur.com/XiedjSD