Emergency---HELP!!! SOS!!!

[dea_mt]

i bought a pistol shrimp and a flame scallop yesterday and now my yellow tang is laying on his side...what do you think is the culprit...do you think he nibbled on the scallop...are they poisonous if eaten...the guy at the fish shop told me when they die they may release toxins but he looks healthy as can be but my tang is just laying on his side breathing very rapidly...my parameters are fine...

 

[dea_mt]

well the sucker passed on...i think he had nibbled on the flame scallop...are flame scallops poisonous? anywho i'm takin the damn scallop back and i believe i should get a new tang because no one told me!!!