Fish death :-/ :-/

[KSean]

my 6 line wrasse suddenly died on me. Not sure why. I found it curled up behind a live rock with what seems like it’s stomach exploded ? (Fight with another fish ?)
I have a clown and damsel and they’ve been in the tank for more than a year now. (They get along well) .
What could have killed it ?
I’m checking the tank Params as we speak but the other fishes, nem and corals are fine.. usually they all close up if something is really bad.

 

[Big G]

The stomach area on a fish is usually the softest spot. Fish decompose rapidly in the warm waters of a reef tank. So it's not surprising to see the deterioration happen rapidly in that area of the fish's body.

 

[Frtdrmrose7]

The stomach is also one of the first areas your CUC (if you have one) will go after.