I'll start with I wish I took a picture..... Bought a Mandrin Goby from a store we've had luck with yesterday. Got it home, driped acclamated it and added to our quarantine tank. He was kind of slow to get around the tank unlike the others we bought. Well I was up at 1AM and seen he moved. Got up this morning and when the lights came on he was dead on the bottom with a cloudy/white colored substance coming from him. What might it be???