there's no signs of any disease. i believe the smaller one died first cuz i couldn't find him. then the female went this morning. but the female look very depressed before she went. she slept in their spot alone. could they die from the death of their mate?
Sorry for the lost.
So I assume you checked and did not find any slim coming out when it die and that they did not breath heavily when they die, right. Well that remove a lot of the possibility of visible dieases. However, a dead body may still contain other diease which will spread if not removed. Just in case it's contagious, remove it.
If I remember correctly, you have something like 200G(right?), if so, a small fish death would hardly raise your ammonium level.
Will a clown die because of the mate's death-not sure but I am sure(even though many member would think I am crazy), it will tremendously affect the mental health of the living ones and thus lead to poor physical health. Of course, your case does not compare to the following which indicate a graduate health decline due to lost of its habitat then rebound when the appropriate environment is re-established while yours is more like a direct diease. But I think the case below does indicate that clown fish seem very attached to their surroundings.
Check out this thread:
http://www.manhattanreefs.com/forum/reefs-beginners/15947-my-clowns-not-coming-out-please-help.html
They swim around
a green anemone and they were eating before I got them
....
Garlic and selcon did not work
Letting them alone to get used to the tank did not work
Feeding them from the other side did not work
....
A guy who frequent there, gave me
a real green one and
my fish go right at it and rub his body over it. The fish seems very happy to see the green anemone. Finally, it seems going the right direction.:inlove:
....
My clown and the anemone are doing very good. The fish would come to my hands during feeding and share with the anemone. Both are getting fat.
"