The size of a goldfishes brain would depend upon the size of the goldfish. It is however quite large enough to enable the goldfish to survive. By comparison to mammals though it is small.
Betta fish have the brain size of .097, so its close to a gold fish brain size.
Goldfish do not get pregnant. They are egg layers.
no
contrary to popular belief, most goldfish do not have a stomach!
Fairly intelligent. Well they can count to five!
Well my goldfish cost 75 ponds some other goldfish cost 67 pounds it matters how big they are
Yes a lot bigger.
A telescope eye goldfish is in the fancy goldfish type, and most fancy golddfish get up to a foot long (with proper care).
RAINBOWS............ That is all
A telescope eye goldfish is in the fancy goldfish type, and most fancy golddfish get up to a foot long (with proper care).
Not really big but at least 30cms
No
No. A 10 gallon tank is barely big enough to keep a single goldfish in.