Which type of fancy golldfihs do you mean? Oranda Goldfish have bumps on their heads, Fantail Goldifsh might have bumps on their heads, And other Goldfish propbably dont. Some of them have big eyes, like celestial.
The best and only good tank mate for fancy goldfish, are other fancy goldfish.
A goldfish can develop a bumpy head due to a condition called "Lymphocystis," which is caused by a virus that affects the fish's skin and causes growths or bumps to form on its head.
Fancy goldfish can be male or female.
because your goldfish has a tomber(cancer)
A telescope eye goldfish is in the fancy goldfish type, and most fancy golddfish get up to a foot long (with proper care).
A telescope eye goldfish is in the fancy goldfish type, and most fancy golddfish get up to a foot long (with proper care).
Global warming
They are a fancy goldfish (Carassius auratus). They were bred to have scales that look like pearls.
Shubunkins are goldfish, so therefore mixing goldfish with goldfish is usually not a problem. However, if the other goldfish are fancy then mixing them together would not be recommended.
normal fish food
Yes. It should be fine. I have 2 regular goldfish living with a bubble eye goldfish and to fancy fantail goldfish, so I think it will be okay.
Two: There's commons and comets (Comets have longer fins). These are generally excluded from the "fancy" category. If you see a sign in your pet store labelling a non-fancy goldfish as "shubunkin", that's just the coloration. It's either a common goldfish, or a comet-tailed one.