I read that it is reef safe but semi-agressive.
Minimum Tank Size: 30 gallons
Care Level: Moderate
Tank Conditions: 72-78°F; sg 1.020-1.025; pH 8.1-8.4
Temperament: Semi-aggressive
Max. Size In Aquarium: Up to 4"
Reef Compatible: Yes
Diet: Carnivore
Compatibility: View Chart
The Wartskin feeds by ambush, lying in wait for an unsuspecting fish or crustacean to go by and then lunging forward, grabbing and swallowing the victim whole. The Wartskin has been known to devour fish nearly equal to its own size.