Stresses of Ocellaris pairing lead to death?

[Radioheadx14]

I have a 75g tank with a nice sump and 80lbs of LR. I added 2 ocellaris clowns labeled as "aquacultured" from saltwaterfish.com. One was larger (2-2.5") and one was smaller (1.5") The larger one had a good dark color and the smaller one was lighter but still orange. Both seemed healthy for the 3 months i had them. A little over a week ago the larger clown started being aggressive toward the smaller clown to the point that it cowered behind a power head and later in a little hole in the LR. If it swam out into the open it would be chased and nipped by the larger clown. Everyone i asked said it was normal and they would be paired before long. after a week and a half it never stopped, not even during feeding, so i made sure some food went to the way of the little guy... which i saw him eat a few times. He got frayed tail fins but otherwise looked healthy (no rapid breathing or anything) earlier today he was still just chilling in his hole... and later on dead on the bottom of the tank....

Could the stress of paring and the aggression from the larger clown cause this fish to die or is it something else? I worry about my tank because i am so passionate about it.
Tank parameters:
Ammonia 0 (even after dead fish in tank)
Nitrite (didn't feel a need to test)
Nitrate (below 10... to hard to get an accurate read on anything below 10 on api tests)
pH - 8.2
temp 78F

All other fish, inverts seem fine.

Other tank inhabitants:
Potter's angel
1 surviving clown
2 skunk cleaner shrimp
small CUC
small colony of protopalys
billions of hitchhiking feather dusters.

 

[reefman13]

From that.............I think you just got unlucky....