What Type Of Rainbowfish

They might be pseudomugil furcatus or pseudomugil gertrudae, but I'd imagine @Sue would know best.

There are several Pseudomugil species and I wouldn't trust a shop to label them as the correct species - they can only go by what the wholesaler says they are.

They look most like images of P. gertrudae. females don't have such obvious spots as males, and they'll be juveniles so won't have developed their full adult colouring yet.

The main difference between the species commonly sold is their hardness requirements. P gertrudae and P. signifer need softish to hard; P. furcatus needs hard to very hard water.



This site lists a lot more rainbowfish species than any other, can I suggest looking though all the Pseudomugils to see if any of them look like your fish.
https://rainbowfish.angfaqld.org.au/Melano.htm

I suspect these are hybrids as they show features of both furcatus and gertrudae, as you already thought. Hybrid rainbows are becoming more common, and all(?) Pseudomugil spp can hybridise quite easily.