Does anyone know what this is? It's a lump what appears to be getting bigger on the fish, the scales has started to peel back as their bulge of the lump comes from underneath. I thought maybe it's a tumour or something but another Fish has started to get the same lump on its body. I've started to treat the water with bacterial medicine but no idea if it's the right treatment or not.
I've checked the usual suspects water quality etc all are fine. The aquarium is understocked.
Best regards
Fei
I've checked the usual suspects water quality etc all are fine. The aquarium is understocked.
Best regards
Fei