well, they don't do a lot except sit there and look pretty (altho about 90% of our fish are like that). they will recognize the "food god" tho and come crutching over.
check the fish's lower lip of "bag rub", and make sure that if there is any that it's not too bad as it can become infected. make sure its eyes are clear.
these fish are about "average" difficulty in terms of weaning to dead foods.
make sure the fish isn't housed with any browsing fish or known nippers.
they will shed their cuticle about twice a month, and their stretching/gilling activities just prior to this can look a bit alarming at first.
these fish do best with some type of substrate (i like #3 grade aragonite). our fish seem to prefer open areas (mostly), but also love to hang out in the live macro we run in their tanx.
our specimens seem to get "antsy" if the trates rise too high.
oh...these fish can, and often do change color based on their surroundings (you'll notice the yellow fish turned "tequila sunrise" for us, and regularly shifts its hue from orange to pink.
they are super fish...and definitely one of the "holy grails" of the scorpionfish world. it's very cool to peek into your tank and see something so awesome looking back at you.