If you are refering to a man/laboritory made "Glo-fish" then the species is the Zebra Danio and its' tail in a normal fish is about 3/8"ths. If it is one of the developed long finned types then it could be longer.
They look like fishes but grow legs and loose their tail later
yes they do
Gerbils can grow to be about four inches long without the tail. Depending on the tail length, they can grow to be about 6 to 10 inches long.
13-18 feet
The shape of a fishes tail is decided by its genetic makeup. There is no "treatment" for a bent tail.
About the size of it's tail which is usually quite long.
less than a day guessing
Lyre tail is simply a description of a fishes tail. What kind of fish is it? It will be a Lyre-tailed something.
They vary, most gerbils grow to 4-6 inches (10-15 cm) long [not including the tail; up to 12 inches including the tail]. Great Gerbils, the largest gerbils, grow up to 8 inches (20 cm) long [not including tail; up to 16 inches including the tail].
Betta fish grow to be an average of 2 inches from head to the beginning of the tail.
It will grow up to yhe bodys lenth.
yes it does!!!!!!!!!!!