Likely the most common tumor after pigment cell tumors we see in goldfish. #Goldfish #GoldfishUnion #GoldfishKeepers #GoldfishBreeders #GoldfishOfInstagram #FishDisease #FishBreeding #Aquaculture #KingYo

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Paper here:
https://cancerres.aacrjournals.org/content/canres/12/12/890.full.pdf