Fish with growths need help for diagnosis

[AmyLoo82]

Hello everyone.
My two fantails don’t look well.
One has a large growth on its side.
The other has been losing its colour over a year or so and now has a bump on his head.
Anyone know if this is contagious?

 

[Aiken Drum]

Looks like cancerous tumours to me. Common in goldfish, but not contagious.

Generally the 2 options are either live with it or get them surgically removed.

I see a few sites and youtube videos on treating tumours, for example with vitamins, but im not sure if these actually work.