All toadfish are not venomous/posinous! Read Reef Fishes Vol 1 By Scott W. Michel and that will fill you in on toadfish.
BTW many Lfs employs often miss lablel fish. They also don't always know what they were doing.
I want to get a peppermine hog for my 29gal reef. It is an open top tank do you think that the hogfish will jump out? Are they hard to keep? How big do they get? Any advice on their captive care is needed.