To kill it, use 2 tranq arrows(I only use tranqs for underwater tames.). It will die quickly. There is a rule saying I'm not allowed to ask for an update. LOOPHOLE. Submit a tip saying my knowledge. Tell my story, I am AnonymousUserYT.
Don't attack it with any sort of weapon, even stone. It will electrocute you. If you need its bio toxin, just attack it with fists, and make sure to stay far enough away so that it doesn't sting you. I suggest finding a group of these guys near the surface so that you don't have to worry about bringing any tames, or looking out for aggressive dinos. Hope this helps :>