I went down a big information hole.
I definitely think they are Apistogramma sp. steel blue. These are often sold as Apistogramma agassizzi by pet stores by accident. Anyway, steel blues are believed to be an artificial hybrid that came out of Asian commerical fish farms in the mid 1990s. No one is really sure what the original species is, but it is theorized to be a cross between Apistogramma resticulosa and either Apistogramma borellii or caetei. Although they are an artificial hybrid they can be bred. It seems like originally they could not be bred and/or only males were available in the fish trade, but it sounds like fish farmers have back-crossed them with Apistogramma caetei females in order to improve the viability of fry.
They are very hard to sex as the males and females look nearly identical when not in breeding condition (female Apistos turn bright yellow when breeding). This is unusual for Apistos in general, but it makes more sense if the species is an artificial hybrid.
Supposedly females are rarely available. As such, I think it's quite likely you have a male. I think you might have some trouble sourcing a female if you wish to breed them.
I got this info from these pages: