For me guignardi are special Scriptaphyosemion with very diferents colour between population.
These is my two populations of guignardi
Scriptaphyosemion guignardi "Mamou"
Scriptaphyosemion guignardi "Sougueta"
But the more easy specie for start I think that is
Scriptaphyosemion schmitti "Juarzòn" (Photo my male)
Ciao
PD: Sorry for no write in spanish, but I don`t know and translator are for mads..........