Foxface:  Notes From Penny:  All Foxface species have venomous dorsal (top) & pelvic (bottom) fins.  They are normally shy & non-aggressive but care should be used when hands are in the tank in case they are spooked & accidentally blunder into you!  Please know that I have never experienced or ever heard of one attacking a human.  They are very peaceful.   They love to hang out & swim about with Tangs.  Foxface have a cool ability to radically change their body coloration & pattern.  Mostly seen when they are nervous & trying hard not to be seen or at nighttime when they try to blend in with their surroundings (I call this "putting on their pajamas" ;).  Being mainly herbivores it's best to offer them Nori Seaweed once a day along with flake & frozen foods.  The tank to house these beauties should be a minimum of 4 feet in length.