glofish question

[ZombiesAteMyDog]

I currently have 6 zebra Danio in my 29 gallon tall aquarium, I want to add some glofish, do I need to add a full school of 5 to 6 or can I just add a few since they are just colored danio?

 

[Mumma.of.two]

Love your name. Made me laugh! You can add any number of glofish and they will school with your existing group.