Egg - Typically 0 to 60 hours.
At 80 degrees F. eggs usually hatch at about 60 hours. The hatch time can be shortened slightly at higher temperatures or lengthened by cooler temperatures. Interestingly all of the eggs seem to hatch within a fairly narrow time window. Usually within a few hours of the first eggs hatching the rest will hatch.

Wigglers - From hatching to free swimming.
Usually ends during the 7th day after hatching. The duration of this growth stage is temperature dependant. Higher temperatures will reduce the duration, and cooler temperatures will lengthen the time. Fry left with the parents may act as "wigglers" a little longer as the parents may continuously replace them onto the selected surface.

Fry - From free swimming until they take on the appearance of an angel. Fry will initially be elongated. As they grow and develop dorsal and anal fins will appear, usually first seen at around day 12. The fish will flatten and take on an angel appearance usually by 3 weeks but may be longer depending on tank conditions, crowding and food supply. Some varieties especially double dark blacks will usually be slower to develop. With frequent water changes and feedings, clean tank conditions and not being overcrowded, growth to dime sized bodies can be achieved in 4 weeks, especially with the hardier strains. Overcrowding, poorer water conditions, over feeding, under feeding, can all lead to slower growth and potential fin problems or deformities.

Juveniles - Once they take on an angel appearance they can be referred to as juveniles. Fish are usually described based on the size of their body excluding fins. In the US, American coins are used to estimate their size. Dime, nickel, quarter, half dollar and dollar or larger size. (not the new gold coin)

Adults - Once they reach breeding age they can be referred to as adults. This can be as little as 6 months but usually around 9 to 12 months. Fish age - age of the fry/juveniles have generally been listed in 2 ways.
1) Time from the egg being laid or
2) Time from the fry free swimming. Only 1 week usually separates the two but it may make a difference when trying to compare growth rates of 3-week-old fish that may be 3 to 4 weeks old since being laid. Whether one uses time since the egg was laid or time from free swimming is not important as long as this information is conveyed. Interesting that most animals that are raised in captivity from eggs are aged from the egg hatching.

Preferred form for the age of Angelfish fry/juveniles shall be the time from the egg being laid (spawn date).