dead shrimp..

Like anything else that dies, it will foul the water. Considering its relatively small mass, it won't be much, but remove it or hope something eats it. Do you have fish or snails living with your shrimp? I'm sure they, along with any other shrimp, will pick at and eat the dead shrimp.
 
I typically remove any dead shrimp. Why deliberately leave something that could effect water quality and the well-being of the other shrimp.
 
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