Among them, the male fish is 3~4 cm long and the female fish is about 5 cm long.

It can be seen that guppy is very small.

Therefore, the length it can grow in a month is very limited.

If it is a young fish that is still in its developmental stage, its changes within one month are still quite obvious.

From birth to one month old, it can grow to 1 cm long.

This length is already very long for guppies.

However, the mature guppy will hardly change in a month.

The male fish, in particular, has a short body length.

After entering maturity, it basically stopped growing.

If it is a female fish, it may grow 2~3 mm.

First, does the guppy grow fast? The guppy in the juvenile stage is in the development stage and grows very fast. When the guppy is immature, that is, the age is between 1~4 months, it develops rapidly and changes almost every day. After about 4~6 months, it can complete sexual maturity and then enter the breeding period. Since then, its development period has ended. Generally speaking, fish are fully mature after 6 months of age. After the mature fish, its growth rate will become very slow. If you don't observe it carefully, you can't see its body length change at all.