I received an online order today from a vendor I have never used before. I would like to get some opinions in regards to one of the fish I received. Will refrain from using the vendors name yet but 2 of the 7 fish I ordered arrived dead. I understand that this happens occasionally. One that was deceased while upsetting I was ok with because the fish looked to be in decent condition. The other is pictured below. Can a fish deteriorate this rapidly after death while packed in an individual bag?

