Let me introduce you our new friend, a little red shrimp which arrived a few weeks ago from the lake. They were several of them but apparently they killed each other until only one was left.
It looks like a Macrobrachium, is 5 cm long (excluding claws) and seems to eat all kinds of flake and pellet foods.
There is one Macrobrachium described, Macrobrachium moorei (sometimes called Palaemon moorei). It could be it, but how could we be sure about it ? Anyway, we are happy to see crustaceans from the lake arrive in France.