[m-i-l]

Thanks for this. I wasn't too keen on them to be honest because they reminded me of little fleas jumping around. But it is sad to read "These shrimp are social creatures, but the Ecosphere starts with only four (often less, with one or more dead on arrival), and eventually only a single one is left to swim around alone, perhaps for years"[0]. I had assumed that they would reproduce within the ecosystem, but apparently not.

[0] https://en.wikipedia.org/wiki/Ecosphere_(aquarium)