Midas blenny is now dead with no obvious signs of disease. So that is all three fish that I added three weeks ago dead. It was eating fine today and swimming around without any issues but I found it dead on the sand tonight. I did notice today that the blue cleaner goby has some white spots on it - I'm thinking it's velvet but I will get a picture tomorrow and post in the fish disease forum to see what people think. I have Copper Safe and PraziPro ordered and the QT tank is mixing saltwater as I type.