Guppies:

Guppies like to move about in the top and middle sections of their aquarium/tank and they make amicable companions for goldfish.

Plain females with side and tail blue coloured
Colourful male ​

Further photos will be posted when the fry develop more.

Guppy fry up to 3.5 weeks old on  04/12/2022. 
First fry born on 09/11/2022