They will sleep if you turn of lights in the tank but if you leave them on all night or at night, they may think it is still day and may not sleep. They dont really sleep, they sort of just swim to the bottom and rest. hope this helps a bit :p
The best and only good tank mate for fancy goldfish, are other fancy goldfish.
Fancy goldfish can be male or female.
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.
normal fish food
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.
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.
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.
yes
In water?