help!!!!!!!!!!

[demon666]

my newly aquired blond naso doesnt seem to be doing well at all... he has been in the tank for over 24 hrs now..... when he was added he was swimming around his new tank checking things out but to day i have only seen him out once.. he didnt even come out for feeding time... now he is on his side under a rock at the back of the tank where i cant reach him there is no way he is stuck under the rock as there is lots of room under it. he was added with a powder brown tang and a six line wrass which are both doing fine.... his tank maters are yellow tang powder brown tang sixline wrass, 5 clown fish 3 yellow tail blue damsels and a velvet damsel... tank params are good what can i do to coaks out this fish?????