Doyou understand the cycle issue? If not, read this post:I had no choice. My sister bought "final sale fish"
1 green tiger barb (as small as the danio so very very young)
3 platys (about an inchpretty grown)
3 zebra danio (about 4 cm but pretty grown as well if i had to guess)
-.- no plants. no decoration. What do i do. I have to put the fish in. I asked the store no refunds or "give-backs" for that matter
To avoid the toxic effect of ammonia and then nitrite as that post will detail, your only option now is to do daily water changes of half the tank, every day, until it is cycled. Or until you add some fast-growing plants.
Aside from that, you have some fish issues. Barbs and danios are shoaling fish, they need a group of their own species. A 10g tank is not sufficient room for groups of all these fish, so I guess you can't do much about this. Check the profiles [click the shaded names] on the fish species.
Things cannot be rushed in this hobby, something we all had to learn.