if you feed them regularly with high protein food they should grow quite fast
for males:
New born: 6 mm
One Week: 7 mm
Two Weeks: 1 cm
One month: 1.5 cm
Two months: 2 cm
Three months: 2.5 cm
Six months: 3 - 3.3 cm
Generally females tend to grow much larger than males
It usually takes about 2-3 months for guppy fry to grow up. They will be fully grown at 6 months of age. At 3 months old they should have all of their color. How fast they grow and mature depends on a number of things:
Temperature, 78-80 degrees is the best and speeds up their metabolism.
Water Changes, at LEAST one water change a week, more than once is better.
Water Quality.
Food, Feeding 3-6 times a day, small amounts of food. A high protein diet is necessary. A base food of crushed up flakes are good but supplementing with baby brine shrimp, micro worms, or other live foods will really speed up the process.
Not to many fish, you shouldn't really be overcrowding guppy fry, 6-10 is plenty for a 10 gallon tank.
pets question and answers,www.5d2d.com If you try your best to do as much of this as you can it will help you raise happy healthy fry, and fast too!
Good Luck, and Hope this Helps.
Really it depenpds on the temp, where you want them to live, and food amount and what kind of food. It could take 2-4 i would think. Just so you know many die while they are young.
