HI there....
You May Meant To say ((((P I S C I C I D E))) You may have droped down A litter..
Cuz If You Meant What You Wrote Down Then I don't Realy know what ((picicide)) Means,However!!
-Piscicide :
aChemical substance which is poisonous to fish.
the primary use for piscicide is to eliminate a dominante species of fish in a body of water , as the first step in attempting to populate the body of water with adiffrent fish . thy are also used to combat parastic and invasive species of fish..
Examples may help!
:rotenone,saponins..
And That's What i know about ((piscicide)) for real!!
;)