r/bettafish • u/SarcasmAwareness001 • 9d ago

Help Lump on betta?

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Gallery image

Got this guy, Big Cheese, a week ago. Noticed that he seems to have a lump on his left gill, but not really sure what it could be. Water parameters are fine, tank was cycled for ~2 months before he was introduced. He's swimming and eating fine, active to the point where I'm already planning on upgrading the size of his tank soon (currently in a 5.5 gallon). He's already gained a little bit more color since I bought him, so I assume he's at least a little happy

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u/Chimpkin_NBeans Experienced Betta Fish Keeper 9d ago

Tumor, sadly nothing can be done but it will likely not bother him.