It usually takes 10 to 14 months for angelfish to grow into adult fish. During this period, the body shape and physiology of angelfish gradually mature until they meet the standards of adult fish. Specifically, angelfish can reach sexual maturity at around 10 months old, but this is not an appropriate time for breeding because their body shape and physiology are not fully mature yet. It is recommended to wait until they are 14 months old before breeding.
The body length of adult angelfish is generally between 12 and 18 centimeters, and they can reach a height of 15 to 20 centimeters. Some well-cared-for angelfish can grow to 20 centimeters or even longer. The growth rate of angelfish is closely related to environmental factors and nutritional conditions. In a suitable environment with sufficient nutrition, angelfish can grow better.