Do stonefish have relatives

Yes, stonefish have relatives within the family Synanceiidae, which includes various species of venomous fish known as stonefishes and scorpionfishes. They are part of the order Scorpaeniformes, which also encompasses other related fish such as sculpins and rockfishes. These relatives share similar habitats and some physical characteristics, but stonefish are particularly known for their potent venom and camouflaging abilities.