What Fishes To Add :d

[bagu]

HEY

tank specs first

20 gallon cube, up and running for 5 and a half months.
It has an inbuilt 3 stage rear filtration, and i have added an UGF to it as well

has 2 German Blue Rams, come summer i will try and buy a pair and give these two to my LFS or might get kribs but unsure
and 5 Rummy nose tetras

what fishes can i add now?

its very well planted and i want a few more fishes but what?

I would like some nice colorful fish, not platy's or mollies

thanks

Bagu