A) DR PETER BURGESS REPLIES: Looking at the photo, your Ryukin goldfish appears to have a skin growth, possibly a type of tumour known as a fibroma. Skin fibromas are fairly common on goldfish. Over ...

Fibromas are associated with Gorlin's syndrome in which patients develop odontogenic cysts, epidermal cysts, multiple naevi and basal cell carcinomas of the skin. Fibromas of the heart are ...