The fish could have been bred to have a curled tail so it could be genetic. It could also be caused by the fish having been kept in a tiny container or the tail could have been damaged and the regrowth (scar tissue) has made the tail curl.
There is a wide variety of goldfish types, which also means a variety of tail shapes. Many of the fanciest type (Veiltail, Butterfly) are bred (and inbred) to get a desired tail shape for quality.
This certainly does not change the usage of the fins, as they remain used in the same ways by the fish, but it is more of an 'aesthetic' creation by breeders of very high end goldfish.
because it is a criced fish or it might be hurt
because it takes after one of there parents
It probably has a disease:(
Little balls.
a goldfish with black spots, a horn, and and a black and white giant tail
they are small little green balls try google it
If one is behind the other and is swimming between the tail you will see him spit out eggs and he is sucking them out to fertilize them. If there are no eggs then perhaps they are just close and happy :)
It is a goldfish with a big tail that looks like a fan?
Having your goldfishes tail turn white could mean your goldfish is sick but it could also just be new tail growth.When goldfish grow new tail tissue it may appear white or grayish.This usually happens when a goldfish isn't fully grown .If it is new tail growth than it will be on the end and tips of the fish's tail not the whole tail.
A female dragonfly curls its tail when she is looking for a place to lay her eggs. She is disguising herself to look like a stinging insect so that her predators don't bother her.
stretch a normal gold fish tail
The butterfly tail goldfish usually measures in at 6-7 inches. They are condsidered to be medium in size compared to other goldfish. Their closest relative, the fantail goldfish, is slightly smaller at about 4-6 inches in length.
The shape of a fishes tail is decided by its genetic makeup. There is no "treatment" for a bent tail.
Puzzle No 101, Square Goldfish, To divide the fish into four pieces, look at the fish and draw a X across the body of the fish ignoring its tail piece.
My goldfish Fan tail is attacking my small gold fish, they have been together for over a month now but has only recently started to nibble at the smaller goldfish, how can i stop this
it has a short tail