Why do electric fish need to force electric charges to move?

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000

you can cut your hand off if your not