A zebra danio should be fully grown by the time it is six months old.
No, all danio lay eggs.
it takes a lantern fish 15 hrs after bith to reach adult hood
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.
depending on how you care for you fish, it should live for a while. As i said, how you care for him. You can never really tell how long, but they do seem common in some places I had one and he turned out to live for quite a while. I still have him, so they do live for a while.
6cm (2 Inches) Max
Its not as important how big they are but they do need to reach adulthood and by then they will be at least 7-10cm long (not including the tail)
zebra
Zebra danios are not live-bearing fish, so they do not get pregnant. Instead, the female will lay eggs, and the male will fertilize them. The eggs will hatch about 2 days after being fertilized.
3 months at the least. Cats usually reach sexual maturity around 5-6 months, which is the start of their "teenage" years. Cats reach adulthood at a year old.
2 years Tigers are mature at four years normally. Tigresses around three to three and a half.
zebra
It may grow upto 20 yrs to 16 cm