It’s Christmas Eve! What Are We...
ChatterBank9 mins ago
No best answer has yet been selected by mummyness. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Yes, assuming of course, you treat them for it.
You can buy drops that can be added to the water to treat fin rot. Follow the instructions carefully for whichever brand you buy - this usually involves mixing it with a bit of tank water first, rather than adding the drops direct to the tank. I used Interpet No.8 Anti-Fungus and Finrot Treatment.
My son's goldfish had a touch of fin rot on his tail after we got him. But it cleared up fine and his tail is now beautiful (he's only a bog-standard goldfish - nothing fancy, but he's looking good.)