The way to remove a lamprey and leeches is to stand over a campfire, they will detach and disappear

When they attach themselves you are immune to radiation

They protect you from the stupid nameless

And the radiation

Its main feature is if it bites you your are immune to radiation for 500 seconds with the side effect of it rarely taking away stamina,health,ect, but usually it never gives you any of these, hoped this helped!-C

How to tame lamprey

Fish basket

That is literally it