Actually i woundered about the fish being sick or maybe a coral/worm caught the firefish but now that the clown is also gone just a day after seams strange.
It is very strange. Keep me posted and a sure way to see if the fish did die check the levels in the tank for a week and also if the smell of the tank is off then you know also turn off the lights and if you have some type of moon lights see if the fish come out orr since oyou have a bare bottom tank.. take a flash light turn off all the lights in the tank and then go under the tank and shine the light up wards. That was you can get a good bottom view of the tank. sorry for adding to check the sand
thanks
Actually I did try to look up under the rocks from below.
That is why it is really driving me crazy because i couldn't find anything.
I will see tonight though.
I just hope no more fish vanish.