Another Stocking Question

[Cazgar]

I'm rehoming my 2 remaining guppies, which leaves me with 5 platys & 4 Oto's & some fry which will be going to the Lfs soon.
What else could I have if anything?
My tank Is planted, & has a gravel substrate.
It's filtered with a U3 Fluval filter.
I like bright coloured active fish.
Any suggestions?

 

[soybean]

Apistogrammas?

 

[Cazgar]

I've never seen those, some googling is in order

 

[soybean]

There are many types, a pair of cacatuoides or agassizi will probably be the easiest to start with, both lovely.