Eye tumour in a goldfish

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A smaller mass in the cornea had been removed 6 months earlier and confirmed as a spindle cell tumour. Due to the extent of regrowth, the whole eye was removed and allowed to heal naturally. Over the next six months, remodelling of the facial bones converted the deep socket into a shallow depression. There were no obvious problems due to the operation and the fish coped well with only one eye over the next two years.