I can't even begin to tell you what happened to him because I don't know. I just came home now after a long day and fed the fishies .... Pete was laying in a corner, barely moving his gills. I tried offering him a pellet but he refused to eat. Fins were clamped and shrivelled, and he just wasn't himself .... I had to put him to sleep because I knew he was suffering.
I loved this little guy with all my heart, and I will miss him dearly. Rest in warm waters Pete.