Ummmmm....
That was me who got poisoned by a 14" Volitan lionfish. It hurt worse than any other pain I've ever experienced & I was an accident prone kid
Poked 2 dorsal spines (aka Poison-filled injection systems) into my finger & almost had my bro cut off my arm (long story). Poison Control hotline states that: "Poisons are enzymes, enzymes are proteins, proteins de-nature (break apart) when under high heat." At that point, the poison was past the shoulder & approaching the internal organs so I poured almost boiling hot water on my arm to break up the poison. Sold the Lionfish (used to hand feed it squids/smelts) the next day.
Anthony